src/vs/workbench/api/browser/mainThreadExtensionService.ts/ExtensionHostProxy/getCanonicalURI
class ExtensionHostProxy:	async getCanonicalURI(remoteAuthority: string, uri: URI): Promise<URI | null> {
		const uriComponents = await this._actual.$getCanonicalURI(remoteAuthority, uri);
		return (uriComponents ? URI.revive(uriComponents) : uriComponents);
	}