code: public void configureRuntimeLexer(Binder binder) {
  		binder.bind(Lexer.class)
  			.annotatedWith(Names.named(LexerBindings.RUNTIME))
  			.to(InternalXtypeLexer.class);
  	}
docs: contributed by org.eclipse.xtext.xtext.generator.parser.antlr.XtextAntlrGeneratorFragment2