/// <summary>
/// Resets the singleton, this is required for unit testing.
/// </summary>
public static new void Reset()
{
lock (ThreadSafeLock)
{
_retriever = null;
}
}
/// <summary>
/// Returns a singleton instance of <c>LabelRetriever</c>.
/// </summary>
/// <param name="language"></param>
/// <returns><c>LabelRetriever</c></returns>
/// <seealso href="https://docs.microsoft.com/en-us/dotnet/csharp/language-reference/keywords/lock-statement"/>
public static new LabelRetriever GetLabelRetriever(Languages language = null)
{
if (_retriever == null)
{
// lock will prevent multiple threads from attempting to create the singleton.
lock (ThreadSafeLock)
{
// should check conditional again, after lock is released the singleton would have been creates=d during a previous thread.
if (_retriever == null)
{
_retriever = new LabelRetriever(language);
}
}
}
return(_retriever);
}