returns a new parameter with one path item popped off the end . if this would result in a parameter with an empty collection of path items , null is returned . concode_field_sep String param concode_elem_sep char delimiter concode_field_sep String top concode_elem_sep Parameter popn concode_elem_sep String toString concode_elem_sep Parameter push concode_elem_sep Parameter push
Parameter function ( ) { int loc0 = param . lastIndexOf ( delimiter ) ; if ( loc0 == - 1 ) return null ; else return new Parameter ( param . substring ( 0 , loc0 ) ) ; }