def teams_app_definition(self) -> TeamsAppDefinitionRequestBuilder:
        """
        Provides operations to manage the teamsAppDefinition property of the microsoft.graph.teamsAppInstallation entity.
        """
        from .teams_app_definition.teams_app_definition_request_builder import TeamsAppDefinitionRequestBuilder

        return TeamsAppDefinitionRequestBuilder(self.request_adapter, self.path_parameters)

        Provides operations to manage the teamsAppDefinition property of the microsoft.graph.teamsAppInstallation entity.
        
msgraph/generated/chats/item/installed_apps/item/teams_app_installation_item_request_builder.py