find the implementation of the given builtin functor . concode_field_sep Map<String,Builtin> builtinsByURI concode_elem_sep BuiltinRegistry theRegistry concode_elem_sep Map<String,Builtin> builtins concode_field_sep Builtin getImplementationByURI concode_elem_sep void register concode_elem_sep void register
Builtin function ( String arg0 ) { return builtins . get ( arg0 ) ; }