Is your feature request related to a problem or challenge?

DataFusion 40.0.0 added a new logical_args: Vec<Expr> field to AggregateFunctionExpr, which seems confusing, and there is no documentation in this struct that explains what this field is used for.

In DataFusion Comet, we do not use DataFusion's logical plan or expressions because we are translating an Apache Spark physical plan into a DataFusion physical plan and therefore we have no logical expressions to pass into this new field.

I think at a minimum we should add some documentation around this new feature.