Java implements the action of ros2

[haveitallism]

Hello, I have been trying to use ros2_java to send an action command to ros2, but through continuous testing and viewing the source code, I found that there seems to be no implementation of action. If there is an implementation method but I have not found it, please guide me. If there is no implementation method, is it possible? Can you support it? I will be very grateful~

[lmx112522]

Now I also need java for action communication with ros2, how did you achieve it? Can you tell me? I'd appreciate it.