Hi, i'm working on pyflink and attempting to perform a flat_aggregate on a windowed table, and I even see this in the documentation:

class FlatAggregateTable(object):
    """
    A table that performs flatAggregate on a :class:`~pyflink.table.Table`, a
    :class:`~pyflink.table.GroupedTable` or a :class:`~pyflink.table.WindowGroupedTable`
    """

But when I look at the

WindowGroupedTable

source, it doesn't seem to have the

flat_aggregate

call implemented, only

aggregate

. Is it possible to perform a table aggregation over a windowed table?