@Override
        public Void visitExpressionType(ExpressionTypeExpression expression) {
            // e.g.: &(foo.bar)
            builder.append("&(");
            expression.getExpression().accept(this);
            builder.append(')');
            return null;
        }
Serialize the given JMESPath expression to a string.

@param expression JMESPath expression to serialize.
@return Returns the serialized expression.
smithy-jmespath/src/main/java/software/amazon/smithy/jmespath/ExpressionSerializer.java