public InvalidParameterPropertyInitializerException(FunctionType.InitializerParameterType param, string message)
     : base(
         $"Invalid property initializer parameter \"{param.Name}\"" + (message != null
                 ? $"\n\t{message}"
                 : "")
         ,
         param.DefiningToken
         )
 {
 }
 public InvalidParameterPropertyInitializerException(FunctionType.InitializerParameterType param)
     : this(param, null)
 {
 }