public Object[] getOutputData() {
        return outputData;
    }
@param position int array of 3 or 4 elements
                int array of 3 : position[0]-which element of the streamEventSize array,
                position[1]-BeforeWindowData or OutputData or AfterWindowData,
                position[2]- which attribute
                int array of 4 : position[0]-which element of the streamEventSize array, position[1]-which
                event of the event chain,
                position[3]- BeforeWindowData or OutputData or AfterWindowData, position[4]- which attribute
@return Attribute
modules/siddhi-core/src/main/java/io/siddhi/core/event/state/StateEvent.java