property_choice do
          value_property :no_fill, klass: OpenXml::DrawingML::Properties::FillNone
          property :solid_fill, klass: OpenXml::DrawingML::Properties::FillSolid
          property :gradient_fill, klass: OpenXml::DrawingML::Properties::FillGradient
          property :pattern_fill, klass: OpenXml::DrawingML::Properties::FillPattern