<complexType name="CodeType">
    <annotation>
      <documentation>Name or code with an (optional) authority.  Text token.  
      If the codeSpace attribute is present, then its value should identify a dictionary, thesaurus 
      or authority for the term, such as the organisation who assigned the value, 
      or the dictionary from which it is taken.  
      A text string with an optional codeSpace attribute. </documentation>
    </annotation>
    <simpleContent>
      <extension base="string">
        <attribute name="codeSpace" type="anyURI" use="optional"/>
      </extension>
    </simpleContent>
  </complexType>