parameters: (self)
docstring: Handles when the selected groups have changed in the grouping tab.
docstring_summary: Handles when the selected groups have changed in the grouping tab.
docstring_tokens: Handles when the selected groups have changed in the grouping tab .
function: def handle_groups_changed(self) -> None:
          """Handles when the selected groups have changed in the grouping tab."""
          self.view.populate_group_selector(self.model.group_names())
function_tokens: def handle_groups_changed ( self ) -> None : self . view . populate_group_selector ( self . model . group_names ( ) )