src/vs/workbench/contrib/customEditor/common/customEditor.ts/CustomEditorInfoCollection/bestAvailableEditor
class CustomEditorInfoCollection:	public get bestAvailableEditor(): CustomEditorInfo | undefined {
		const editors = Array.from(this.allEditors).sort((a, b) => {
			return priorityToRank(a.priority) - priorityToRank(b.priority);
		});
		return editors[0];
	}