 
 <pre>
 &lt;complexType name="IdentifierType">
   &lt;complexContent>
     &lt;extension base="{http://webservice.caaers.cabig.nci.nih.gov}MutableDomainObject">
       &lt;sequence>
         &lt;element name="type" type="{http://webservice.caaers.cabig.nci.nih.gov}StudyIdentifierType"/>
         &lt;element name="value" type="{http://webservice.caaers.cabig.nci.nih.gov}CustomStringType"/>
         &lt;element name="primaryIndicator" type="{http://www.w3.org/2001/XMLSchema}boolean"/>
       &lt;/sequence>
