src/vs/workbench/services/extensions/common/extensionHostManager.ts/LazyStartExtensionHostManager/getCanonicalURI
class LazyStartExtensionHostManager:	public async getCanonicalURI(remoteAuthority: string, uri: URI): Promise<URI | null> {
		await this._startCalled.wait();
		if (this._actual) {
			return this._actual.getCanonicalURI(remoteAuthority, uri);
		}
		throw new Error(`Cannot resolve canonical URI`);
	}