What is RQ?.DESKTOP?.SERVICES?.IPC.invokeEventInMain and the related commands?

[ShuiRuTian]

There are lots of commands like

RQ?.DESKTOP?.SERVICES?.IPC.invokeEventInMain("rq-storage:storage-action", {
type: "SSL_PROXYING:GET_ALL",
payload: {},
});

But I could not find the implementation, so, where do they come from?