Zabaa

public static class DateTimeExtentions
{
  public static string ToDateTimeHighPrecision(this DateTime source)
  {
    return source.ToString("MM/dd/yyyy h:mm:ss.fff tt");
  }
}

Zabaa

[HttpGet("GetAllCommandHandlers")]
public async Task<IEnumerable<string>> GetAllCommandHandlers()
{
    var genericType = typeof(ICommandHandler<>);
    var types =  AppDomain.CurrentDomain.GetAssemblies().SelectMany(x => x.GetTypes())
        .Where(t => t.GetInterfaces().Any(i => i.IsGenericType && i.GetGenericTypeDefinition().Equals(genericType)))
        .Select(x => $"{x.FullName}.{x.Name}").ToList();
    
    var genericTypeWithResult = typeof(ICommandHandler<,>);
    var typesWithresult =  AppDomain.CurrentDomain.GetAssemblies().SelectMany(x => x.GetTypes())