ImageMagick.MagickImage.NativeMagickImage.Threshold C# (CSharp) Метод

      public void Threshold(double threshold)
      {
        IntPtr exception = IntPtr.Zero;
        #if ANYCPU
        if (NativeLibrary.Is64Bit)
        #endif
        #if WIN64 || ANYCPU
        NativeMethods.X64.MagickImage_Threshold(Instance, threshold, out exception);
        #endif
        #if ANYCPU
        else
        #endif
        #if !WIN64 || ANYCPU
        NativeMethods.X86.MagickImage_Threshold(Instance, threshold, out exception);
        #endif
        CheckException(exception);
      }
      public void Thumbnail(string geometry)