void function ( Object arg0 , int arg1 ) { }
this hook method will be invoked when the dfs begins the visit of an element . since there is no return parameter this method will not effect the algorithms behaviour . concode_field_sep int linkCount concode_elem_sep Map myVisitedElements concode_elem_sep Iterator myElements concode_elem_sep boolean done concode_field_sep boolean isVisited concode_elem_sep Iterator getElementLinks concode_elem_sep void endVisit concode_elem_sep void perform concode_elem_sep void perform concode_elem_sep void perform concode_elem_sep void perform concode_elem_sep void setVisited concode_elem_sep int visit concode_elem_sep int getVisitedDepth