src/vs/workbench/contrib/notebook/common/notebookCommon.ts/MimeTypeDisplayOrder/constructor
class MimeTypeDisplayOrder:	constructor(
		initialValue: readonly string[] = [],
		private readonly defaultOrder = NOTEBOOK_DISPLAY_ORDER,
	) {
		this.order = [...new Set(initialValue)].map(pattern => ({
			pattern,
			matches: glob.parse(normalizeSlashes(pattern))
		}));
	}