extensions/markdown-language-features/src/preview/documentRenderer.ts/MdDocumentRenderer/constructor
class MdDocumentRenderer:	constructor(
		private readonly _engine: MarkdownItEngine,
		private readonly _context: vscode.ExtensionContext,
		private readonly _cspArbiter: ContentSecurityPolicyArbiter,
		private readonly _contributionProvider: MarkdownContributionProvider,
		private readonly _logger: ILogger
	) {
		this.iconPath = {
			dark: vscode.Uri.joinPath(this._context.extensionUri, 'media', 'preview-dark.svg'),
			light: vscode.Uri.joinPath(this._context.extensionUri, 'media', 'preview-light.svg'),
		};
	}