src/vs/workbench/contrib/terminal/electron-sandbox/localPty.ts/LocalPty/freePortKillProcess
class LocalPty:	freePortKillProcess(port: string): Promise<{ port: string; processId: string }> {
		if (!this._localPtyService.freePortKillProcess) {
			throw new Error('freePortKillProcess does not exist on the local pty service');
		}
		return this._localPtyService.freePortKillProcess(port);
	}