Correct way to ensure already attached buffer is detached from the workspace and language server

[asmodeus812]

Hello, i wanted to know what is the correct way to detach an already attached buffer,to ensure that the language server has also received the detach request as well. This is about detaching an already attached single buffer, from a workspace, where other buffers that are already attached should remain attached, would like to be able to do this without restarting the language server.