public IEnumerable<HighlightSpan> GetHighlights(SemanticModel semanticModel, SourceLocation position)
{
var symbolAtPosition = semanticModel.FindSymbol(position);
if (symbolAtPosition == null)
return Enumerable.Empty<HighlightSpan>();
return semanticModel.FindUsages(symbolAtPosition.Value.Symbol)
.Select(s => new HighlightSpan(s.Span, s.Kind == SymbolSpanKind.Definition));
}
