src/vs/platform/terminal/node/ptyHostService.ts/PtyHostService/freePortKillProcess
class PtyHostService:	async freePortKillProcess(port: string): Promise<{ port: string; processId: string }> {
		if (!this._proxy.freePortKillProcess) {
			throw new Error('freePortKillProcess does not exist on the pty proxy');
		}
		return this._proxy.freePortKillProcess(port);
	}