def by_teams_app_id(self,teams_app_id: str) -> TeamsAppItemRequestBuilder:
        """
        Provides operations to manage the teamsApps property of the microsoft.graph.appCatalogs entity.
        param teams_app_id: The unique identifier of teamsApp
        Returns: TeamsAppItemRequestBuilder
        """
        if teams_app_id is None:
            raise TypeError("teams_app_id cannot be null.")
        from .item.teams_app_item_request_builder import TeamsAppItemRequestBuilder

        url_tpl_params = get_path_parameters(self.path_parameters)
        url_tpl_params["teamsApp%2Did"] = teams_app_id
        return TeamsAppItemRequestBuilder(self.request_adapter, url_tpl_params)

        Provides operations to manage the teamsApps property of the microsoft.graph.appCatalogs entity.
        param teams_app_id: The unique identifier of teamsApp
        Returns: TeamsAppItemRequestBuilder
        
msgraph/generated/app_catalogs/teams_apps/teams_apps_request_builder.py