public void accept(GoElementVisitor visitor) {
   visitor.visitBinaryExpression(this);
 }
 @Override
 public void accept(GoElementVisitor visitor) {
   visitor.visitInterfaceType(this);
 }
 @Override
 public void accept(GoElementVisitor visitor) {
   visitor.visitBuiltinCallExpression(this);
 }
 public void accept(GoElementVisitor visitor) {
   visitor.visitImportDeclaration(this);
 }