question: get this node typecasted to a jnodenumber concode_field_sep PlaceHolder placeHolder concode_field_sep Result<JJNodeArray> asArray concode_elem_sep JType getType concode_elem_sep Result<JJNodeObject> asObject concode_elem_sep Result<JJNodeNull> asNull concode_elem_sep T match concode_elem_sep Result<JJNodeString> asString concode_elem_sep Result<JJNodeBoolean> asBoolean
target: Result < JJNodeNumber > function ( ) { return Result . empty ( ) ; }