Map < String , Object > function ( ) { return null ; }
returns a map of config data passed to js that defines eligible events that can be placed on native views . this should return bubbling directly-dispatched event types and specify what names should be used to subscribe to either form bubbling/capturing . returned map should be of the form : `` ontwirl '' : `` phasedregistrationnames '' : `` bubbled '' : `` ontwirl '' , `` captured '' : `` ontwirlcaptured '' concode_field_sep PlaceHolder placeHolder concode_field_sep Map<String,String> getNativeProps concode_elem_sep Map<String,Object> getExportedViewConstants concode_elem_sep String getName concode_elem_sep void onAfterUpdateTransaction concode_elem_sep void addEventEmitters concode_elem_sep void receiveCommand concode_elem_sep Class<? extends C> getShadowNodeClass concode_elem_sep void updateExtraData concode_elem_sep void onDropViewInstance concode_elem_sep C createShadowNodeInstance concode_elem_sep Map<String,Object> getExportedCustomDirectEventTypeConstants concode_elem_sep T createViewInstance concode_elem_sep Map<String,Integer> getCommandsMap concode_elem_sep void updateProperties concode_elem_sep T createView