src/vs/platform/keybinding/common/keybindingResolver.ts/KeybindingResolver/lookupKeybindings
class KeybindingResolver:	public lookupKeybindings(commandId: string): ResolvedKeybindingItem[] {
		let items = this._lookupMap.get(commandId);
		if (typeof items === 'undefined' || items.length === 0) {
			return [];
		}

		// Reverse to get the most specific item first
		let result: ResolvedKeybindingItem[] = [], resultLen = 0;
		for (let i = items.length - 1; i >= 0; i--) {
			result[resultLen++] = items[i];
		}
		return result;
	}