check also enumeration values not only the enumeration literal names (see test Pos_050202_name_conversion_rules_020)
e.g. the element-definition
  <element name="MyType">
    <simpleType>
      <restriction base="string">
        <enumeration value="red"/>
        <enumeration value="红色red"/>
      <enumeration value="blue"/>
      <enumeration value="藍色blue"/>
      </restriction>
    </simpleType>  
  </element>
should generate the enumeration type ( blue(0)="blue", red(1)="red", red_1(2)="红色red", blue_1(3)="藍色blue" )
