java.lang.IllegalArgumentException: object is not an instance of declaring class

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Thrown to indicate that a method has been passed an illegal or inappropriate argument. Check that you don't have more than one method existing with the same name.

Solutions on the web

via Apache's JIRA Issue Tracker by Martin Mavrov, 1 year ago
object is not an instance of declaring class
via Apache's JIRA Issue Tracker by Martin Mavrov, 1 year ago
object is not an instance of declaring class
via Oracle Community by 807546, 1 year ago
object is not an instance of declaring class
java.lang.IllegalArgumentException: object is not an instance of declaring class
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:86)
at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:226)
at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:899)
at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:740)
at org.codehaus.groovy.runtime.InvokerHelper.invokePogoMethod(InvokerHelper.java:777)
at org.codehaus.groovy.runtime.InvokerHelper.invokeMethod(InvokerHelper.java:757)
at org.codehaus.groovy.runtime.ScriptBytecodeAdapter.invokeMethodN(ScriptBytecodeAdapter.java:167)

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