question: convenience for #clienterror int clienterror 404 . concode_field_sep PlaceHolder placeHolder concode_field_sep Handler next concode_elem_sep Handler redirect concode_elem_sep Handler fileSystem concode_elem_sep Handler chain concode_elem_sep Handler chain concode_elem_sep Handler chain concode_elem_sep Handler chain concode_elem_sep Handler chain concode_elem_sep Handler accepts concode_elem_sep Handler prefix concode_elem_sep Handler clientError concode_elem_sep Handler delete concode_elem_sep Handler put concode_elem_sep Handler patch concode_elem_sep Handler path concode_elem_sep Handler path concode_elem_sep Handler assets concode_elem_sep Handler post concode_elem_sep Handler get concode_elem_sep Handler host concode_elem_sep Handler header concode_elem_sep Handler contentTypes concode_elem_sep Handler register concode_elem_sep Handler register
target: Handler function ( ) { return ClientErrorForwardingHandler . NOT_FOUND ; }