code: @Override
     public void writeClassBody(Definition def, Writer out) throws IOException
     {
        out.write("public interface " + getClassName(def));
        if (def.isAdminObjectImplRaAssociation())
        {
           out.write(" extends Referenceable, Serializable");
        }
        writeLeftCurlyBracket(out, 0);
        writeEol(out);
  
        int indent = 1;
        writeConfigProps(def, out, indent);
        writeRightCurlyBracket(out, 0);
     }
docs: Output class
  
  @param def definition
  @param out Writer
  @throws IOException ioException