src/vs/workbench/services/userData/common/fileUserDataProvider.ts/FileUserDataProvider/handleFileChanges
class FileUserDataProvider:	private handleFileChanges(changes: readonly IFileChange[]): void {
		const userDataChanges: IFileChange[] = [];
		for (const change of changes) {
			const userDataResource = this.toUserDataResource(change.resource);
			if (this.watchResources.findSubstr(userDataResource)) {
				userDataChanges.push({
					resource: userDataResource,
					type: change.type
				});
			}
		}
		if (userDataChanges.length) {
			this.logService.debug('User data changed');
			this._onDidChangeFile.fire(userDataChanges);
		}
	}