src/vs/workbench/services/history/browser/historyService.ts/EditorNavigationStacks/getStack
class EditorNavigationStacks:	private getStack(filter = GoFilter.NONE): EditorNavigationStack {
		switch (filter) {
			case GoFilter.NONE: return this.selectionsStack;
			case GoFilter.EDITS: return this.editsStack;
			case GoFilter.NAVIGATION: return this.navigationsStack;
		}
	}