extensions/ipynb/src/notebookAttachmentCleaner.ts/AttachmentCleaner/updateDiagnostics
class AttachmentCleaner:	private updateDiagnostics(cellUri: vscode.Uri, diagnostics: IAttachmentDiagnostic[]) {
		const vscodeDiagnostics: vscode.Diagnostic[] = [];
		for (const currDiagnostic of diagnostics) {
			currDiagnostic.ranges.forEach(range => {
				const diagnostic = new vscode.Diagnostic(range, `The image named: '${currDiagnostic.name}' is not present in cell metadata.`, vscode.DiagnosticSeverity.Warning);
				diagnostic.code = DiagnosticCode.missing_attachment;
				vscodeDiagnostics.push(diagnostic);
			});
		}

		this._imageDiagnosticCollection.set(cellUri, vscodeDiagnostics);
	}