A blocking version of RosServiceNode

From what I see here, the service client is non-blocking:

BehaviorTree.ROS2/behaviortree_ros2/include/behaviortree_ros2/bt_service_node.hpp

Line 59 in b8ee381

    
            * RosServiceNode will try to be non-blocking for the entire duration of the call.

I think it would be nice to have a blocking version as well, since people often send a service request then wait for the response. Or does this not fit well with the BT philosophy?