def by_call_id(self,call_id: str) -> CallItemRequestBuilder:
        """
        Provides operations to manage the calls property of the microsoft.graph.cloudCommunications entity.
        param call_id: The unique identifier of call
        Returns: CallItemRequestBuilder
        """
        if call_id is None:
            raise TypeError("call_id cannot be null.")
        from .item.call_item_request_builder import CallItemRequestBuilder

        url_tpl_params = get_path_parameters(self.path_parameters)
        url_tpl_params["call%2Did"] = call_id
        return CallItemRequestBuilder(self.request_adapter, url_tpl_params)

        Provides operations to manage the calls property of the microsoft.graph.cloudCommunications entity.
        param call_id: The unique identifier of call
        Returns: CallItemRequestBuilder
        
msgraph/generated/communications/calls/calls_request_builder.py