src/vs/platform/keyboardLayout/common/keyboardMapper.ts/CachedKeyboardMapper/resolveKeybinding
class CachedKeyboardMapper:	public resolveKeybinding(keybinding: Keybinding): ResolvedKeybinding[] {
		const hashCode = keybinding.getHashCode();
		const resolved = this._cache.get(hashCode);
		if (!resolved) {
			const r = this._actual.resolveKeybinding(keybinding);
			this._cache.set(hashCode, r);
			return r;
		}
		return resolved;
	}