def by_managed_e_book_id(self,managed_e_book_id: str) -> ManagedEBookItemRequestBuilder:
        """
        Provides operations to manage the managedEBooks property of the microsoft.graph.deviceAppManagement entity.
        param managed_e_book_id: The unique identifier of managedEBook
        Returns: ManagedEBookItemRequestBuilder
        """
        if managed_e_book_id is None:
            raise TypeError("managed_e_book_id cannot be null.")
        from .item.managed_e_book_item_request_builder import ManagedEBookItemRequestBuilder

        url_tpl_params = get_path_parameters(self.path_parameters)
        url_tpl_params["managedEBook%2Did"] = managed_e_book_id
        return ManagedEBookItemRequestBuilder(self.request_adapter, url_tpl_params)

        Provides operations to manage the managedEBooks property of the microsoft.graph.deviceAppManagement entity.
        param managed_e_book_id: The unique identifier of managedEBook
        Returns: ManagedEBookItemRequestBuilder
        
msgraph/generated/device_app_management/managed_e_books/managed_e_books_request_builder.py