Change-Id: I7afb81cfa4f8041181c24666bb9acd71ff45692b
``json_each()``, ``json_to_record()``, ``json_populate_recordset()`` use such
forms. These classes of SQL function calling forms in SQLAlchemy are available
using the :meth:`_functions.FunctionElement.table_valued` method in conjunction
-with :class:`_function.Function` objects generated from the :data:`_sql.func`
+with :class:`_functions.Function` objects generated from the :data:`_sql.func`
namespace.
Examples from PostgreSQL's reference documentation follow below: