private IEnumerable <ClassificationSpan> ClassifyArtifact(ITextSnapshot snapshot, IArtifact artifact)
{
ITextRange range = artifact;
// Don't highlight indent for indented code blocks
if (artifact.LeftSeparator.Length > 0 && artifact.RightSeparator.Length == 0)
{
range = artifact.InnerRange;
}
yield return(new ClassificationSpan(range.ToSnapshotSpan(snapshot), codeType));
}