src/vs/platform/keybinding/common/keybindingsRegistry.ts/KeybindingsRegistryImpl/getDefaultKeybindings
class KeybindingsRegistryImpl:	public getDefaultKeybindings(): IKeybindingItem[] {
		if (!this._cachedMergedKeybindings) {
			this._cachedMergedKeybindings = Array.from(this._coreKeybindings).concat(this._extensionKeybindings);
			this._cachedMergedKeybindings.sort(sorter);
		}
		return this._cachedMergedKeybindings.slice(0);
	}