@Override
    protected Expression visitFieldReference(FieldReference node, Context<C> context) {
      if (!context.isDefaultRewrite()) {
        Expression result =
            rewriter.rewriteFieldReference(node, context.get(), ExpressionTreeRewriter.this);
        if (result != null) {
          return result;
        }
      }

      return node;
    }
Invoke the default rewrite logic explicitly. Specifically, it skips the invocation of the
expression rewriter for the provided node.
iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/plan/relational/planner/ir/ExpressionTreeRewriter.java