question: gets the error that was thrown during rpc execution . does not block . either #get or #get long , timeunit should be called first because these methods block until the rpc has completed . concode_field_sep CountDownLatch latch concode_elem_sep Callback<T> chainedCallback concode_elem_sep Throwable error concode_elem_sep T result concode_field_sep boolean cancel concode_elem_sep boolean isCancelled concode_elem_sep void handleResult concode_elem_sep void handleError concode_elem_sep T getResult concode_elem_sep T get concode_elem_sep T get concode_elem_sep void await concode_elem_sep void await concode_elem_sep boolean isDone
target: Throwable function ( ) { return error ; }