<definitions name="EmpService" 
    ...  
    xmlns:plnk="http://schemas.xmlsoap.org/ws/2003/05/partner-link/"
    xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/">
 ...
 <portType name="EmpInterface">
  <operation name="getEmpSalary">
    <input message="tns:EmpInterface_getEmpSalary"/>
    <output message="tns:EmpInterface_getEmpSalaryResponse"/>
  </operation>
 </portType>
...
 <plnk:partnerLinkType name="EmpServiceLink"> 
   <plnk:role name="EmpServiceProvider">
     <plnk:portType name="tns:EmpInterface"/>
   </plnk:role>
 </plnk:partnerLinkType>
</definitions>