src/vs/workbench/contrib/notebook/common/notebookOutputRenderer.ts/NotebookOutputRendererInfo/matchesMimeTypeOnly
class NotebookOutputRendererInfo:	private matchesMimeTypeOnly(mimeType: string) {
		if (this.extends !== undefined) {
			return false;
		}

		return this.mimeTypeGlobs.some(pattern => pattern(mimeType)) || this.mimeTypes.some(pattern => pattern === mimeType);
	}