return this;
}
public Expression parseBinaryMessageChain_receiver_(final String _aString, final Expression _rec) {
final Expression _arg;
final BinaryMessageNode _receiver;
this.eatWhitespace();
_arg = this.parseUnaryMessage();
this.eatWhitespace();
_receiver = BinaryMessageNode.factory.receiver_selector_argument_(_rec, _aString, _arg);
return this.parseBinaryOrUnaryMessage_(_receiver);