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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.

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via Stack Overflow by Jeet
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object is not an instance of declaring class
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java.lang.IllegalArgumentException: object is not an instance of declaring class	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:606)	at org.mule.model.resolvers.AbstractEntryPointResolver.invokeMethod(AbstractEntryPointResolver.java:148)	at org.mule.model.resolvers.MethodHeaderPropertyEntryPointResolver.invoke(MethodHeaderPropertyEntryPointResolver.java:109)	at org.mule.model.resolvers.DefaultEntryPointResolverSet.invoke(DefaultEntryPointResolverSet.java:36)	at org.mule.component.DefaultComponentLifecycleAdapter.invoke(DefaultComponentLifecycleAdapter.java:339)	at org.mule.component.AbstractJavaComponent.invokeComponentInstance(AbstractJavaComponent.java:82)	at org.mule.component.AbstractJavaComponent.doInvoke(AbstractJavaComponent.java:73)	at org.mule.component.AbstractComponent.invokeInternal(AbstractComponent.java:125)	at org.mule.component.AbstractComponent.access$000(AbstractComponent.java:59)	at org.mule.component.AbstractComponent$1$1.process(AbstractComponent.java:241)	at org.mule.execution.ExceptionToMessagingExceptionExecutionInterceptor.execute(ExceptionToMessagingExceptionExecutionInterceptor.java:24)	at org.mule.execution.MessageProcessorNotificationExecutionInterceptor.execute(MessageProcessorNotificationExecutionInterceptor.java:58)	at org.mule.execution.MessageProcessorExecutionTemplate.execute(MessageProcessorExecutionTemplate.java:44)	at org.mule.processor.chain.DefaultMessageProcessorChain.doProcess(DefaultMessageProcessorChain.java:94)	at org.mule.processor.chain.AbstractMessageProcessorChain.process(AbstractMessageProcessorChain.java:69)	at org.mule.processor.chain.InterceptingChainLifecycleWrapper.doProcess(InterceptingChainLifecycleWrapper.java:50)	at org.mule.processor.chain.AbstractMessageProcessorChain.process(AbstractMessageProcessorChain.java:69)	at org.mule.processor.chain.InterceptingChainLifecycleWrapper.access$001(InterceptingChainLifecycleWrapper.java:22)	at org.mule.processor.chain.InterceptingChainLifecycleWrapper$1.process(InterceptingChainLifecycleWrapper.java:66)	at org.mule.execution.ExceptionToMessagingExceptionExecutionInterceptor.execute(ExceptionToMessagingExceptionExecutionInterceptor.java:24)	at org.mule.execution.MessageProcessorNotificationExecutionInterceptor.execute(MessageProcessorNotificationExecutionInterceptor.java:58)	at org.mule.execution.MessageProcessorExecutionTemplate.execute(MessageProcessorExecutionTemplate.java:44)	at org.mule.processor.chain.InterceptingChainLifecycleWrapper.process(InterceptingChainLifecycleWrapper.java:61)	at org.mule.component.AbstractComponent.process(AbstractComponent.java:159)	at org.mule.execution.ExceptionToMessagingExceptionExecutionInterceptor.execute(ExceptionToMessagingExceptionExecutionInterceptor.java:24)	at org.mule.execution.MessageProcessorNotificationExecutionInterceptor.execute(MessageProcessorNotificationExecutionInterceptor.java:58)	at org.mule.execution.MessageProcessorExecutionTemplate.execute(MessageProcessorExecutionTemplate.java:44)	at org.mule.processor.chain.DefaultMessageProcessorChain.doProcess(DefaultMessageProcessorChain.java:94)	at org.mule.processor.chain.AbstractMessageProcessorChain.process(AbstractMessageProcessorChain.java:69)	at org.mule.execution.ExceptionToMessagingExceptionExecutionInterceptor.execute(ExceptionToMessagingExceptionExecutionInterceptor.java:24)	at org.mule.execution.MessageProcessorExecutionTemplate.execute(MessageProcessorExecutionTemplate.java:44)	at org.mule.processor.AbstractInterceptingMessageProcessorBase.processNext(AbstractInterceptingMessageProcessorBase.java:102)	at org.mule.module.cxf.CxfInboundMessageProcessor.processNext(CxfInboundMessageProcessor.java:389)	at org.mule.module.cxf.MuleInvoker$1.process(MuleInvoker.java:88)	at org.mule.module.cxf.MuleInvoker$1.process(MuleInvoker.java:84)	at org.mule.execution.ExecuteCallbackInterceptor.execute(ExecuteCallbackInterceptor.java:16)	at org.mule.execution.HandleExceptionInterceptor.execute(HandleExceptionInterceptor.java:30)	at org.mule.execution.HandleExceptionInterceptor.execute(HandleExceptionInterceptor.java:14)	at org.mule.execution.BeginAndResolveTransactionInterceptor.execute(BeginAndResolveTransactionInterceptor.java:54)	at org.mule.execution.SuspendXaTransactionInterceptor.execute(SuspendXaTransactionInterceptor.java:50)	at org.mule.execution.RethrowExceptionInterceptor.execute(RethrowExceptionInterceptor.java:28)	at org.mule.execution.RethrowExceptionInterceptor.execute(RethrowExceptionInterceptor.java:13)	at org.mule.execution.ErrorHandlingExecutionTemplate.execute(ErrorHandlingExecutionTemplate.java:59)	at org.mule.module.cxf.MuleInvoker.invoke(MuleInvoker.java:83)