public IList<VoxelVariableProfile> GetVariableProfiles()

//var voxelLayer = ... ;
//Must be on the QueuedTask.Run()

var profiles = voxelLayer.GetVariableProfiles();

//Select any profile as long as it is not the current selected variable
var not_selected = profiles.Where(p => p.Variable != sel_profile.Variable).ToList();
if (not_selected.Count() > 0)
{
    voxelLayer.SetSelectedVariableProfile(not_selected.First());
}

//var voxelLayer = ... ;
//Must be on the QueuedTask.Run()

var variable_profiles = voxelLayer.GetVariableProfiles();

//var voxelLayer = ... ;
//Must be on the QueuedTask.Run()

var variable = voxelLayer.GetVariableProfiles().First();
var renderer = variable.Renderer;
if (variable.DataType == VoxelVariableDataType.Continuous)
{
    //Renderer will be stretch
    var stretchRenderer = renderer as CIMVoxelStretchRenderer;
    //access the renderer

}
else //VoxelVariableDataType.Discrete
{
    //Renderer will be unique value
    var uvr = renderer as CIMVoxelUniqueValueRenderer;
    //access the renderer
}

//var voxelLayer = ... ;
//Must be on the QueuedTask.Run()

var variable = voxelLayer.GetVariableProfiles().First();
var max = variable.MaxNumberOfIsosurfaces;
if (max >= variable.GetIsosurfaces().Count)
{
    //no more surfaces can be created on this variable
}

//var voxelLayer = ... ;
//Must be on the QueuedTask.Run()

var variable = voxelLayer.GetVariableProfiles().First();
if (variable.DataType != VoxelVariableDataType.Continuous)
{
    //No iso surfaces
    //Iso surface can only be created for VoxelVariableDataType.Continuous
}