extensions/markdown-language-features/src/util/workspaceCache.ts/MdWorkspaceInfoCache/populateCache
class MdWorkspaceInfoCache:	private async populateCache(): Promise<void> {
		const markdownDocumentUris = await this.workspace.getAllMarkdownDocuments();
		for (const document of markdownDocumentUris) {
			if (!this._cache.has(document.uri)) {
				this.update(document);
			}
		}
	}