src/vs/workbench/contrib/debug/common/abstractDebugAdapter.ts/AbstractDebugAdapter/sendResponse
class AbstractDebugAdapter:	sendResponse(response: DebugProtocol.Response): void {
		if (response.seq > 0) {
			this._onError.fire(new Error(`attempt to send more than one response for command ${response.command}`));
		} else {
			this.internalSend('response', response);
		}
	}