extensions/markdown-language-features/src/markdownExtensions.ts/VSCodeExtensionMarkdownContributionProvider/getCurrentContributions
class VSCodeExtensionMarkdownContributionProvider:	private getCurrentContributions(): MarkdownContributions {
		return vscode.extensions.all
			.map(MarkdownContributions.fromExtension)
			.reduce(MarkdownContributions.merge, MarkdownContributions.Empty);
	}