ImageMagick.MagickImage.GetInstance C# (CSharp) Method

    internal static IntPtr GetInstance(MagickImage instance)
    {
      if (instance == null)
        return IntPtr.Zero;
      return instance._NativeInstance.Instance;
    }
  }

   public IntPtr WriteStream(MagickImage image, MagickSettings settings, ReadWriteStreamDelegate reader, ReadWriteStreamDelegate writer, SeekStreamDelegate seeker, TellStreamDelegate teller)
   {
       using (INativeInstance settingsNative = MagickSettings.CreateInstance(settings))
       {
           IntPtr exception = IntPtr.Zero;
           IntPtr result;
 #if ANYCPU
           if (NativeLibrary.Is64Bit)
 #endif
 #if WIN64 || ANYCPU
           result = NativeMethods.X64.MagickImageCollection_WriteStream(MagickImage.GetInstance(image), settingsNative.Instance, reader, writer, seeker, teller, out exception);
 #endif
 #if ANYCPU
           else
 #endif
 #if !WIN64 || ANYCPU
           result = NativeMethods.X86.MagickImageCollection_WriteStream(MagickImage.GetInstance(image), settingsNative.Instance, reader, writer, seeker, teller, out exception);
 #endif
           MagickException magickException = MagickExceptionHelper.Create(exception);
           if (MagickExceptionHelper.IsError(magickException))
           {
               if (result != IntPtr.Zero)
               {
                   Dispose(result);
               }
               throw magickException;
           }
           RaiseWarning(magickException);
           return(result);
       }
   }