A complex type with an empty content model may have attributes, but no other content. In this case, there will only be properties generated from attributes.

XSD:

  <xsd:complexType name="Empty">
     <xsd:attribute name="attrint" type="xsd:integer"/>
     <!-- other attributes -->
  </xsd:complexType>

Generated code:

Java:

   public class Empty extends XBComplexType
   {
      ...
      //attribute methods

      public int getAttrint() {...}

      public boolean isSetAttrint() {...}

      public void setAttrint(int value) {...}

      public void setAttrint() {...}

      [property methods for other attributes here]
      ...
   }

C#:

   public class Empty : XBComplexType
   {
      ...
      //attribute methods

      public int getAttrint() {...}
   
      public bool isSetAttrint() {...}

      public void setAttrint(int value) {...}

      public void setAttrint() {...}

      [property methods for other attributes here]
      ...
   }