public IEnumerable <RegistryKey> openKey()
{
using RegistryKey baseKeyHandle = baseKey.openKey();
IEnumerable <RegistryKey> subKeys;
if (isPatternLiteral(keyName))
{
RegistryKey?subKey = baseKeyHandle.OpenSubKey(keyName !.ToString(), true);
subKeys = subKey != null ? new[] { subKey } : Enumerable.Empty <RegistryKey>();
}
else
{
// ReSharper disable once AccessToDisposedClosure - closure is evaluated by .ToList() before method returns and baseKeyHandle is disposed
subKeys = baseKeyHandle.GetSubKeyNames()
.Where(subkeyName => keyName?.IsMatch(subkeyName) ?? true)
.Select(subkeyName => baseKeyHandle.OpenSubKey(subkeyName, true))
.Compact()
.Where(subKey => displayName == null || (RegistryHelpers.getDisplayName(subKey) is { } displayNameValue&& displayName.IsMatch(displayNameValue)))
.Compact()
.ToList();
}
return(subKeys);
}