public ImageMosaicSubLayer GetImageLayer()

{
    // Get the image sub-layer from the mosaic layer.
    //Note: needs to be called on the QueuedTask
    ImageMosaicSubLayer mosaicImageSubLayer = mosaicLayer.GetImageLayer();
    // Get the colorizer from the image sub-layer.
    CIMRasterColorizer rasterColorizer = mosaicImageSubLayer.GetColorizer();
    // Update raster colorizer properties.
    rasterColorizer.Brightness = 10;
    rasterColorizer.Contrast = -5;
    rasterColorizer.ResamplingType = RasterResamplingType.NearestNeighbor;
    // Update the image sub-layer with the changed colorizer.
    mosaicImageSubLayer.SetColorizer(rasterColorizer);
}

{
    // Get the image sub-layer from the mosaic layer.
    //Note: needs to be called on the QueuedTask
    ImageMosaicSubLayer mosaicImageSubLayer = mosaicLayer.GetImageLayer();
    // Get the colorizer from the image sub-layer.
    CIMRasterColorizer rColorizer = mosaicImageSubLayer.GetColorizer();
    // Check if the colorizer is an RGB colorizer.
    if (rColorizer is CIMRasterRGBColorizer rasterRGBColorizer)
    {
        // Update RGB colorizer properties.
        rasterRGBColorizer.StretchType = RasterStretchType.ESRI;
        // Update the image sub-layer with the changed colorizer.
        mosaicImageSubLayer.SetColorizer(rasterRGBColorizer);
    }
}

{
    // Get the image sub-layer from the mosaic layer.
    //Note: needs to be called on the QueuedTask
    ImageMosaicSubLayer mosaicImageSubLayer = mosaicLayer.GetImageLayer();
    // Get the list of colorizers that can be applied to the image sub-layer.
    IEnumerable<RasterColorizerType> applicableColorizerList =
mosaicImageSubLayer.GetApplicableColorizers();
    // Check if the RGB colorizer is part of the list.
    bool isTrue_ContainTheColorizerType =
applicableColorizerList.Contains(RasterColorizerType.RGBColorizer);
}

{
    // Get the image sub-layer from the mosaic layer.
    //Note: needs to be called on the QueuedTask
    ImageMosaicSubLayer mosaicImageSubLayer = mosaicLayer.GetImageLayer();
    // Check if the Stretch colorizer can be applied to the image sub-layer.
    if (mosaicImageSubLayer.GetApplicableColorizers().Contains(RasterColorizerType.StretchColorizer))
    {
        // Create a new Stretch Colorizer Definition using the default constructor.
        StretchColorizerDefinition stretchColorizerDef_default = new StretchColorizerDefinition();
        // Create a new Stretch colorizer using the colorizer definition created above.
        CIMRasterStretchColorizer newStretchColorizer_default =
    await mosaicImageSubLayer.CreateColorizerAsync(stretchColorizerDef_default) as CIMRasterStretchColorizer;
        // Set the new colorizer on the image sub-layer.
        mosaicImageSubLayer.SetColorizer(newStretchColorizer_default);
    }
}

{
    // Get the image sub-layer from the mosaic layer.
    //Note: needs to be called on the QueuedTask
    ImageMosaicSubLayer mosaicImageSubLayer = mosaicLayer.GetImageLayer();
    // Check if the Stretch colorizer can be applied to the image sub-layer.
    if (mosaicImageSubLayer.GetApplicableColorizers().Contains(RasterColorizerType.StretchColorizer))
    {
        // Create a new Stretch colorizer definition specifying parameters
        // for band index, stretch type, gamma and color ramp.
        StretchColorizerDefinition stretchColorizerDef_custom =
    new StretchColorizerDefinition(1, RasterStretchType.ESRI, 2, colorRamp);
        // Create a new stretch colorizer using the colorizer definition created above.
        CIMRasterStretchColorizer newStretchColorizer_custom =
    await mosaicImageSubLayer.CreateColorizerAsync(stretchColorizerDef_custom) as CIMRasterStretchColorizer;
        // Set the new colorizer on the image sub-layer.
        mosaicImageSubLayer.SetColorizer(newStretchColorizer_custom);
    }
}

{
    //Note: needs to be called on the QueuedTask
    // Get the image sub-layer from the mosaic layer.
    ImageServiceLayer mosaicImageSubLayer = mosaicLayer.GetImageLayer();
    // Get the mosaic rule.
    CIMMosaicRule mosaicingRule = mosaicImageSubLayer.GetMosaicRule();
    // Set the Mosaic Method to Center.
    mosaicingRule.MosaicMethod = RasterMosaicMethod.Center;
    // Update the mosaic with the changed mosaic rule.
    mosaicImageSubLayer.SetMosaicRule(mosaicingRule);
}

{
    //Note: needs to be called on the QueuedTask
    // Get the image sub-layer from the mosaic layer.
    ImageServiceLayer mosaicImageSublayerToUse = mosaicLayer.GetImageLayer();
    // Get the mosaic rule.
    CIMMosaicRule mosaicRule = mosaicImageSublayerToUse.GetMosaicRule();
    // Set the Mosaic Operator to Mean.
    mosaicRule.MosaicOperatorType = RasterMosaicOperatorType.Mean;
    // Update the mosaic with the changed mosaic rule.
    mosaicImageSublayerToUse.SetMosaicRule(mosaicRule);
}