adds an observer to the observers . concode_field_sep String apiUrl concode_elem_sep List<RequestObserver> observers concode_elem_sep Map<String,List<String>> defaultRequestHeaders concode_field_sep Map<String,List<String>> getRequestHeaders concode_elem_sep void addCookie concode_elem_sep String getApiUrl concode_elem_sep List<RequestObserver> getObservers concode_elem_sep void addRequestHeader
void function ( RequestObserver arg0 ) { if ( arg0 == null ) { throw new NullPointerException ( "srini_string" ) ; } observers . add ( arg0 ) ; }