Plug.getId

Gets the unique ID of an #AtkPlug object, which can be used to embed inside of an #AtkSocket using [atk.socket.Socket.embed].

Internally, this calls a class function that should be registered by the IPC layer (usually at-spi2-atk). The implementor of an #AtkPlug object should call this function (after atk-bridge is loaded) and pass the value to the process implementing the #AtkSocket, so it could embed the plug.