question: remove listener . concode_field_sep Listener sync concode_elem_sep Combo size concode_elem_sep double width concode_elem_sep Combo name concode_elem_sep SelectionListener listener concode_elem_sep String type concode_elem_sep boolean enabled concode_elem_sep Button on concode_field_sep Graphic getGraphic concode_elem_sep void widgetDefaultSelected concode_elem_sep void setGraphic concode_elem_sep void setMark concode_elem_sep void modifyText concode_elem_sep void widgetSelected concode_elem_sep void fire concode_elem_sep void sync concode_elem_sep void listen concode_elem_sep void addListener concode_elem_sep Composite createControl
target: void function ( SelectionListener arg0 ) { if ( this . listener == arg0 ) this . listener = null ; }