extensions/markdown-language-features/src/languageFeatures/diagnostics.ts/LinkDoesNotExistDiagnostic/constructor
class LinkDoesNotExistDiagnostic:	constructor(range: vscode.Range, message: string, severity: vscode.DiagnosticSeverity, link: string) {
		super(range, message, severity);
		this.link = link;
	}