<java.lang.IllegalArgumentException>
  <detailMessage>java.lang.ClassCastException@1a11e03e</detailMessage>
  <stackTrace>
    <trace>sun.reflect.GeneratedMethodAccessor3350.invoke(Unknown Source)</trace>
    <trace>sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)</trace>
    <trace>java.lang.reflect.Method.invoke(Method.java:606)</trace>
    <trace>com.thoughtworks.xstream.core.util.SerializationMembers.callWriteReplace(SerializationMembers.java:101)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.marshal(AbstractReflectionConverter.java:78)</trace>
    <trace>com.thoughtworks.xstream.core.AbstractReferenceMarshaller.convert(AbstractReferenceMarshaller.java:69)</trace>
    <trace>com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:58)</trace>
    <trace>com.thoughtworks.xstream.core.AbstractReferenceMarshaller$1.convertAnother(AbstractReferenceMarshaller.java:84)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.marshallField(AbstractReflectionConverter.java:274)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter$2.writeField(AbstractReflectionConverter.java:250)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter$2.&lt;init&gt;(AbstractReflectionConverter.java:213)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doMarshal(AbstractReflectionConverter.java:144)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.marshal(AbstractReflectionConverter.java:90)</trace>
    <trace>com.thoughtworks.xstream.core.AbstractReferenceMarshaller.convert(AbstractReferenceMarshaller.java:69)</trace>
    <trace>com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:58)</trace>
    <trace>com.thoughtworks.xstream.core.AbstractReferenceMarshaller$1.convertAnother(AbstractReferenceMarshaller.java:84)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.marshallField(AbstractReflectionConverter.java:274)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter$2.writeField(AbstractReflectionConverter.java:250)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter$2.&lt;init&gt;(AbstractReflectionConverter.java:213)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doMarshal(AbstractReflectionConverter.java:144)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.marshal(AbstractReflectionConverter.java:90)</trace>
    <trace>com.thoughtworks.xstream.core.AbstractReferenceMarshaller.convert(AbstractReferenceMarshaller.java:69)</trace>
    <trace>com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:58)</trace>
    <trace>com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:43)</trace>
    <trace>com.thoughtworks.xstream.core.AbstractReferenceMarshaller$1.convertAnother(AbstractReferenceMarshaller.java:88)</trace>
    <trace>com.thoughtworks.xstream.converters.collections.AbstractCollectionConverter.writeItem(AbstractCollectionConverter.java:66)</trace>
    <trace>com.thoughtworks.xstream.converters.collections.MapConverter.marshal(MapConverter.java:79)</trace>
    <trace>com.thoughtworks.xstream.core.AbstractReferenceMarshaller.convert(AbstractReferenceMarshaller.java:69)</trace>
    <trace>com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:58)</trace>
    <trace>com.thoughtworks.xstream.core.AbstractReferenceMarshaller$1.convertAnother(AbstractReferenceMarshaller.java:84)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.marshallField(AbstractReflectionConverter.java:274)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter$2.writeField(AbstractReflectionConverter.java:250)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter$2.&lt;init&gt;(AbstractReflectionConverter.java:213)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doMarshal(AbstractReflectionConverter.java:144)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.marshal(AbstractReflectionConverter.java:90)</trace>
    <trace>com.thoughtworks.xstream.core.AbstractReferenceMarshaller.convert(AbstractReferenceMarshaller.java:69)</trace>
    <trace>com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:58)</trace>
    <trace>com.thoughtworks.xstream.core.AbstractReferenceMarshaller$1.convertAnother(AbstractReferenceMarshaller.java:84)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.marshallField(AbstractReflectionConverter.java:274)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter$2.writeField(AbstractReflectionConverter.java:250)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter$2.&lt;init&gt;(AbstractReflectionConverter.java:213)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doMarshal(AbstractReflectionConverter.java:144)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.marshal(AbstractReflectionConverter.java:90)</trace>
    <trace>com.thoughtworks.xstream.core.AbstractReferenceMarshaller.convert(AbstractReferenceMarshaller.java:69)</trace>
    <trace>com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:58)</trace>
    <trace>com.thoughtworks.xstream.core.AbstractReferenceMarshaller$1.convertAnother(AbstractReferenceMarshaller.java:84)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.marshallField(AbstractReflectionConverter.java:274)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter$2.writeField(AbstractReflectionConverter.java:250)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter$2.&lt;init&gt;(AbstractReflectionConverter.java:213)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doMarshal(AbstractReflectionConverter.java:144)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.marshal(AbstractReflectionConverter.java:90)</trace>
    <trace>com.thoughtworks.xstream.core.AbstractReferenceMarshaller.convert(AbstractReferenceMarshaller.java:69)</trace>
    <trace>com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:58)</trace>
    <trace>com.thoughtworks.xstream.core.AbstractReferenceMarshaller$1.convertAnother(AbstractReferenceMarshaller.java:84)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.marshallField(AbstractReflectionConverter.java:274)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter$2.writeField(AbstractReflectionConverter.java:250)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter$2.&lt;init&gt;(AbstractReflectionConverter.java:213)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doMarshal(AbstractReflectionConverter.java:144)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.marshal(AbstractReflectionConverter.java:90)</trace>
    <trace>com.thoughtworks.xstream.core.AbstractReferenceMarshaller.convert(AbstractReferenceMarshaller.java:69)</trace>
    <trace>com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:58)</trace>
    <trace>com.thoughtworks.xstream.core.AbstractReferenceMarshaller$1.convertAnother(AbstractReferenceMarshaller.java:84)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.marshallField(AbstractReflectionConverter.java:274)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter$2.writeField(AbstractReflectionConverter.java:250)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter$2.&lt;init&gt;(AbstractReflectionConverter.java:213)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doMarshal(AbstractReflectionConverter.java:144)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.marshal(AbstractReflectionConverter.java:90)</trace>
    <trace>com.thoughtworks.xstream.core.AbstractReferenceMarshaller.convert(AbstractReferenceMarshaller.java:69)</trace>
    <trace>com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:58)</trace>
    <trace>com.thoughtworks.xstream.core.AbstractReferenceMarshaller$1.convertAnother(AbstractReferenceMarshaller.java:84)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.marshallField(AbstractReflectionConverter.java:274)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter$2.writeField(AbstractReflectionConverter.java:250)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter$2.&lt;init&gt;(AbstractReflectionConverter.java:213)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doMarshal(AbstractReflectionConverter.java:144)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.marshal(AbstractReflectionConverter.java:90)</trace>
    <trace>com.thoughtworks.xstream.core.AbstractReferenceMarshaller.convert(AbstractReferenceMarshaller.java:69)</trace>
    <trace>com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:58)</trace>
    <trace>com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:43)</trace>
    <trace>com.thoughtworks.xstream.core.AbstractReferenceMarshaller$1.convertAnother(AbstractReferenceMarshaller.java:88)</trace>
    <trace>com.thoughtworks.xstream.converters.collections.AbstractCollectionConverter.writeItem(AbstractCollectionConverter.java:66)</trace>
    <trace>com.thoughtworks.xstream.converters.collections.ArrayConverter.marshal(ArrayConverter.java:45)</trace>
    <trace>com.thoughtworks.xstream.core.AbstractReferenceMarshaller.convert(AbstractReferenceMarshaller.java:69)</trace>
    <trace>com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:58)</trace>
    <trace>com.thoughtworks.xstream.core.AbstractReferenceMarshaller$1.convertAnother(AbstractReferenceMarshaller.java:84)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.marshallField(AbstractReflectionConverter.java:274)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter$2.writeField(AbstractReflectionConverter.java:250)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter$2.&lt;init&gt;(AbstractReflectionConverter.java:213)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doMarshal(AbstractReflectionConverter.java:144)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.marshal(AbstractReflectionConverter.java:90)</trace>
    <trace>com.thoughtworks.xstream.core.AbstractReferenceMarshaller.convert(AbstractReferenceMarshaller.java:69)</trace>
    <trace>com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:58)</trace>
    <trace>com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:43)</trace>
    <trace>com.thoughtworks.xstream.core.AbstractReferenceMarshaller$1.convertAnother(AbstractReferenceMarshaller.java:88)</trace>
    <trace>com.thoughtworks.xstream.converters.collections.AbstractCollectionConverter.writeItem(AbstractCollectionConverter.java:66)</trace>
    <trace>com.thoughtworks.xstream.converters.collections.ArrayConverter.marshal(ArrayConverter.java:45)</trace>
    <trace>com.thoughtworks.xstream.core.AbstractReferenceMarshaller.convert(AbstractReferenceMarshaller.java:69)</trace>
    <trace>com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:58)</trace>
    <trace>com.thoughtworks.xstream.core.AbstractReferenceMarshaller$1.convertAnother(AbstractReferenceMarshaller.java:84)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.marshallField(AbstractReflectionConverter.java:274)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter$2.writeField(AbstractReflectionConverter.java:250)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter$2.&lt;init&gt;(AbstractReflectionConverter.java:213)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doMarshal(AbstractReflectionConverter.java:144)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.marshal(AbstractReflectionConverter.java:90)</trace>
    <trace>com.thoughtworks.xstream.core.AbstractReferenceMarshaller.convert(AbstractReferenceMarshaller.java:69)</trace>
    <trace>com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:58)</trace>
    <trace>com.thoughtworks.xstream.core.AbstractReferenceMarshaller$1.convertAnother(AbstractReferenceMarshaller.java:84)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.marshallField(AbstractReflectionConverter.java:274)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter$2.writeField(AbstractReflectionConverter.java:250)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter$2.&lt;init&gt;(AbstractReflectionConverter.java:213)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doMarshal(AbstractReflectionConverter.java:144)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.marshal(AbstractReflectionConverter.java:90)</trace>
    <trace>com.thoughtworks.xstream.core.AbstractReferenceMarshaller.convert(AbstractReferenceMarshaller.java:69)</trace>
    <trace>com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:58)</trace>
    <trace>com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:43)</trace>
    <trace>com.thoughtworks.xstream.core.AbstractReferenceMarshaller$1.convertAnother(AbstractReferenceMarshaller.java:88)</trace>
    <trace>com.thoughtworks.xstream.converters.collections.AbstractCollectionConverter.writeItem(AbstractCollectionConverter.java:66)</trace>
    <trace>com.thoughtworks.xstream.converters.collections.ArrayConverter.marshal(ArrayConverter.java:45)</trace>
    <trace>com.thoughtworks.xstream.core.AbstractReferenceMarshaller.convert(AbstractReferenceMarshaller.java:69)</trace>
    <trace>com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:58)</trace>
    <trace>com.thoughtworks.xstream.core.AbstractReferenceMarshaller$1.convertAnother(AbstractReferenceMarshaller.java:84)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.marshallField(AbstractReflectionConverter.java:274)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter$2.writeField(AbstractReflectionConverter.java:250)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter$2.&lt;init&gt;(AbstractReflectionConverter.java:213)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doMarshal(AbstractReflectionConverter.java:144)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.marshal(AbstractReflectionConverter.java:90)</trace>
    <trace>com.thoughtworks.xstream.core.AbstractReferenceMarshaller.convert(AbstractReferenceMarshaller.java:69)</trace>
    <trace>com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:58)</trace>
    <trace>com.thoughtworks.xstream.core.AbstractReferenceMarshaller$1.convertAnother(AbstractReferenceMarshaller.java:84)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.marshallField(AbstractReflectionConverter.java:274)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter$2.writeField(AbstractReflectionConverter.java:250)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter$2.&lt;init&gt;(AbstractReflectionConverter.java:213)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doMarshal(AbstractReflectionConverter.java:144)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.marshal(AbstractReflectionConverter.java:90)</trace>
    <trace>com.thoughtworks.xstream.core.AbstractReferenceMarshaller.convert(AbstractReferenceMarshaller.java:69)</trace>
    <trace>com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:58)</trace>
    <trace>com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:43)</trace>
    <trace>com.thoughtworks.xstream.core.AbstractReferenceMarshaller$1.convertAnother(AbstractReferenceMarshaller.java:88)</trace>
    <trace>com.thoughtworks.xstream.converters.collections.AbstractCollectionConverter.writeItem(AbstractCollectionConverter.java:66)</trace>
    <trace>com.thoughtworks.xstream.converters.collections.ArrayConverter.marshal(ArrayConverter.java:45)</trace>
    <trace>com.thoughtworks.xstream.core.AbstractReferenceMarshaller.convert(AbstractReferenceMarshaller.java:69)</trace>
    <trace>com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:58)</trace>
    <trace>com.thoughtworks.xstream.core.AbstractReferenceMarshaller$1.convertAnother(AbstractReferenceMarshaller.java:84)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.marshallField(AbstractReflectionConverter.java:274)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter$2.writeField(AbstractReflectionConverter.java:250)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter$2.&lt;init&gt;(AbstractReflectionConverter.java:213)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doMarshal(AbstractReflectionConverter.java:144)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.marshal(AbstractReflectionConverter.java:90)</trace>
    <trace>com.thoughtworks.xstream.core.AbstractReferenceMarshaller.convert(AbstractReferenceMarshaller.java:69)</trace>
    <trace>com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:58)</trace>
    <trace>com.thoughtworks.xstream.core.AbstractReferenceMarshaller$1.convertAnother(AbstractReferenceMarshaller.java:84)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.marshallField(AbstractReflectionConverter.java:274)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter$2.writeField(AbstractReflectionConverter.java:250)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter$2.&lt;init&gt;(AbstractReflectionConverter.java:213)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doMarshal(AbstractReflectionConverter.java:144)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.marshal(AbstractReflectionConverter.java:90)</trace>
    <trace>com.thoughtworks.xstream.core.AbstractReferenceMarshaller.convert(AbstractReferenceMarshaller.java:69)</trace>
    <trace>com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:58)</trace>
    <trace>com.thoughtworks.xstream.core.AbstractReferenceMarshaller$1.convertAnother(AbstractReferenceMarshaller.java:84)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.marshallField(AbstractReflectionConverter.java:274)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter$2.writeField(AbstractReflectionConverter.java:250)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter$2.&lt;init&gt;(AbstractReflectionConverter.java:213)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doMarshal(AbstractReflectionConverter.java:144)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.marshal(AbstractReflectionConverter.java:90)</trace>
    <trace>com.thoughtworks.xstream.core.AbstractReferenceMarshaller.convert(AbstractReferenceMarshaller.java:69)</trace>
    <trace>com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:58)</trace>
    <trace>com.thoughtworks.xstream.core.AbstractReferenceMarshaller$1.convertAnother(AbstractReferenceMarshaller.java:84)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.marshallField(AbstractReflectionConverter.java:274)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter$2.writeField(AbstractReflectionConverter.java:250)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter$2.&lt;init&gt;(AbstractReflectionConverter.java:213)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doMarshal(AbstractReflectionConverter.java:144)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.marshal(AbstractReflectionConverter.java:90)</trace>
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    <trace>com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:58)</trace>
    <trace>com.thoughtworks.xstream.core.AbstractReferenceMarshaller$1.convertAnother(AbstractReferenceMarshaller.java:84)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.marshallField(AbstractReflectionConverter.java:274)</trace>
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    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter$2.&lt;init&gt;(AbstractReflectionConverter.java:213)</trace>
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    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.marshal(AbstractReflectionConverter.java:90)</trace>
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    <trace>com.thoughtworks.xstream.core.AbstractReferenceMarshaller$1.convertAnother(AbstractReferenceMarshaller.java:88)</trace>
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    <trace>com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:58)</trace>
    <trace>com.thoughtworks.xstream.core.AbstractReferenceMarshaller$1.convertAnother(AbstractReferenceMarshaller.java:84)</trace>
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    <trace>com.thoughtworks.xstream.core.AbstractReferenceMarshaller.convert(AbstractReferenceMarshaller.java:69)</trace>
    <trace>com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:58)</trace>
    <trace>com.thoughtworks.xstream.core.AbstractReferenceMarshaller$1.convertAnother(AbstractReferenceMarshaller.java:84)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.marshallField(AbstractReflectionConverter.java:274)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter$2.writeField(AbstractReflectionConverter.java:250)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter$2.&lt;init&gt;(AbstractReflectionConverter.java:213)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doMarshal(AbstractReflectionConverter.java:144)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.marshal(AbstractReflectionConverter.java:90)</trace>
    <trace>com.thoughtworks.xstream.core.AbstractReferenceMarshaller.convert(AbstractReferenceMarshaller.java:69)</trace>
    <trace>com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:58)</trace>
    <trace>com.thoughtworks.xstream.core.AbstractReferenceMarshaller$1.convertAnother(AbstractReferenceMarshaller.java:84)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.marshallField(AbstractReflectionConverter.java:274)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter$2.writeField(AbstractReflectionConverter.java:250)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter$2.&lt;init&gt;(AbstractReflectionConverter.java:213)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doMarshal(AbstractReflectionConverter.java:144)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.marshal(AbstractReflectionConverter.java:90)</trace>
    <trace>com.thoughtworks.xstream.core.AbstractReferenceMarshaller.convert(AbstractReferenceMarshaller.java:69)</trace>
    <trace>com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:58)</trace>
    <trace>com.thoughtworks.xstream.core.AbstractReferenceMarshaller$1.convertAnother(AbstractReferenceMarshaller.java:84)</trace>
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    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.marshallField(AbstractReflectionConverter.java:274)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter$2.writeField(AbstractReflectionConverter.java:250)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter$2.&lt;init&gt;(AbstractReflectionConverter.java:213)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doMarshal(AbstractReflectionConverter.java:144)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.marshal(AbstractReflectionConverter.java:90)</trace>
    <trace>com.thoughtworks.xstream.core.AbstractReferenceMarshaller.convert(AbstractReferenceMarshaller.java:69)</trace>
    <trace>com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:58)</trace>
    <trace>com.thoughtworks.xstream.core.AbstractReferenceMarshaller$1.convertAnother(AbstractReferenceMarshaller.java:84)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.marshallField(AbstractReflectionConverter.java:274)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter$2.writeField(AbstractReflectionConverter.java:250)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter$2.&lt;init&gt;(AbstractReflectionConverter.java:213)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doMarshal(AbstractReflectionConverter.java:144)</trace>
    <trace>com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.marshal(AbstractReflectionConverter.java:90)</trace>
    <trace>com.thoughtworks.xstream.core.AbstractReferenceMarshaller.convert(AbstractReferenceMarshaller.java:69)</trace>
    <trace>com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:58)</trace>
    <trace>com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:43)</trace>
    <trace>com.thoughtworks.xstream.core.TreeMarshaller.start(TreeMarshaller.java:82)</trace>
    <trace>com.thoughtworks.xstream.core.AbstractTreeMarshallingStrategy.marshal(AbstractTreeMarshallingStrategy.java:37)</trace>
    <trace>com.thoughtworks.xstream.XStream.marshal(XStream.java:1319)</trace>
    <trace>com.thoughtworks.xstream.XStream.marshal(XStream.java:1308)</trace>
    <trace>com.thoughtworks.xstream.XStream.toXML(XStream.java:1281)</trace>
    <trace>org.apache.struts2.rest.handler.XStreamHandler.fromObject(XStreamHandler.java:54)</trace>
    <trace>org.apache.struts2.rest.DefaultContentTypeHandlerManager.handleResult(DefaultContentTypeHandlerManager.java:193)</trace>
    <trace>org.apache.struts2.rest.RestActionInvocation.executeResult(RestActionInvocation.java:232)</trace>
    <trace>org.apache.struts2.rest.RestActionInvocation.processResult(RestActionInvocation.java:197)</trace>
    <trace>org.apache.struts2.rest.RestActionInvocation.invoke(RestActionInvocation.java:145)</trace>
    <trace>com.opensymphony.xwork2.DefaultActionProxy.execute(DefaultActionProxy.java:147)</trace>
    <trace>org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:575)</trace>
    <trace>org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction(ExecuteOperations.java:81)</trace>
    <trace>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:99)</trace>
    <trace>org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)</trace>
    <trace>org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)</trace>
    <trace>com.yell.portalpb.filters.SetLocaleFilter.doFilter(SetLocaleFilter.java:68)</trace>
    <trace>org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)</trace>
    <trace>org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)</trace>
    <trace>org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219)</trace>
    <trace>org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)</trace>
    <trace>org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501)</trace>
    <trace>org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:142)</trace>
    <trace>org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)</trace>
    <trace>org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:610)</trace>
    <trace>org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)</trace>
    <trace>org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:537)</trace>
    <trace>org.apache.coyote.ajp.AbstractAjpProcessor.process(AbstractAjpProcessor.java:831)</trace>
    <trace>org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:658)</trace>
    <trace>org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1556)</trace>
    <trace>org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1513)</trace>
    <trace>java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)</trace>
    <trace>java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)</trace>
    <trace>org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)</trace>
    <trace>java.lang.Thread.run(Thread.java:745)</trace>
  </stackTrace>
  <suppressedExceptions class="java.util.Collections$UnmodifiableRandomAccessList" resolves-to="java.util.Collections$UnmodifiableList">
    <c class="list"/>
    <list reference="../c"/>
  </suppressedExceptions>
</java.lang.IllegalArgumentException>