def by_managed_app_registration_id(self,managed_app_registration_id: str) -> ManagedAppRegistrationItemRequestBuilder:
        """
        Provides operations to manage the managedAppRegistrations property of the microsoft.graph.deviceAppManagement entity.
        param managed_app_registration_id: The unique identifier of managedAppRegistration
        Returns: ManagedAppRegistrationItemRequestBuilder
        """
        if managed_app_registration_id is None:
            raise TypeError("managed_app_registration_id cannot be null.")
        from .item.managed_app_registration_item_request_builder import ManagedAppRegistrationItemRequestBuilder

        url_tpl_params = get_path_parameters(self.path_parameters)
        url_tpl_params["managedAppRegistration%2Did"] = managed_app_registration_id
        return ManagedAppRegistrationItemRequestBuilder(self.request_adapter, url_tpl_params)

        Provides operations to manage the managedAppRegistrations property of the microsoft.graph.deviceAppManagement entity.
        param managed_app_registration_id: The unique identifier of managedAppRegistration
        Returns: ManagedAppRegistrationItemRequestBuilder
        
msgraph/generated/device_app_management/managed_app_registrations/managed_app_registrations_request_builder.py