<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
  targetNamespace="http://schemas.microsoft.com/developer/vsx-schema-design/2011"
  xmlns:base="http://schemas.microsoft.com/developer/vsx-schema/2011"
  attributeFormDefault="qualified">

  <xs:attributeGroup name="DesignAttributes">
      <xs:attribute name="Source" type="xs:string"/>
      <xs:attribute name="ProjectName" type="xs:string"/>
  </xs:attributeGroup>

</xs:schema>