question: remove the first change from the queue . concode_field_sep int UPDATE concode_elem_sep int SET concode_elem_sep int ADD concode_elem_sep Object[] elements concode_elem_sep LinkedList queue concode_elem_sep int REMOVE concode_elem_sep int type concode_field_sep void enqueue concode_elem_sep void enqueue concode_elem_sep int getType concode_elem_sep Object[] getElements concode_elem_sep boolean isEmpty
target: Change function ( ) { Change loc0 = ( Change ) queue . removeFirst ( ) ; return loc0 ; }