src/vs/workbench/api/common/extHostOutput.ts/AbstractExtHostOutputChannel/constructor
class AbstractExtHostOutputChannel:	constructor(name: string, log: boolean, file: URI | undefined, proxy: MainThreadOutputServiceShape) {
		super();

		this._name = name;
		this._proxy = proxy;
		this._id = proxy.$register(this.name, log, file);
		this._disposed = false;
		this._offset = 0;
	}