try
{
// prepare for invocation
this.onBeforeInvocation(wsInvocation);
final ServiceEndpointContainer ejbContainer = this.getEjb3Container();
final InvocationContextCallback invocationCallback = new EJB3InvocationContextCallback(wsInvocation);
final Class<?> implClass = ejbContainer.getServiceImplementationClass();
final Method seiMethod = wsInvocation.getJavaMethod();
final Method implMethod = this.getImplMethod(implClass, seiMethod);
final Object[] args = wsInvocation.getArgs();