The parameters are : (name [type] description)

• userId [Long] : Id of the user whose information is being returned.
• userFieldDatas [array of UserFieldData] : an array of UserFieldData elements

 <complexType name="user">
   <complexContent>
     <restriction base="{http://www.w3.org/2001/XMLSchema}anyType">
       <sequence>
         <element name="userId" type="{http://www.w3.org/2001/XMLSchema}long"/>
         <element name="userFieldDatas" type="{http://webservice.module.yosemite.www.memdoc.org/}userFieldData" maxOccurs="unbounded" minOccurs="0"/>
       </sequence>
     </restriction>
   </complexContent>
 </complexType>

Located in /src/wrapper/User.php (line 27)