question: the actual response indexresponse or deleteresponse . null in case of failure . concode_field_sep ActionWriteResponse response concode_elem_sep Failure failure concode_elem_sep String opType concode_elem_sep String index concode_elem_sep Throwable cause concode_elem_sep int id concode_elem_sep String type concode_elem_sep RestStatus status concode_field_sep long getVersion concode_elem_sep String getOpType concode_elem_sep String getIndex concode_elem_sep String getIndex concode_elem_sep boolean isFailed concode_elem_sep void readFrom concode_elem_sep BulkItemResponse readBulkItem concode_elem_sep String getMessage concode_elem_sep String getId concode_elem_sep String getId concode_elem_sep String getFailureMessage concode_elem_sep RestStatus getStatus concode_elem_sep Throwable getCause concode_elem_sep void writeTo concode_elem_sep int getItemId concode_elem_sep String getType concode_elem_sep String getType concode_elem_sep Failure getFailure
target: T function ( ) { return ( T ) response ; }