>.
 If this <code>Service</code> instance has a WSDL and
 the <code>endpointReference</code> metadata
 also has a WSDL, then the WSDL from this instance MUST be used.
 If this <code>Service</code> instance does not have a WSDL and
 the <code>endpointReference</code> does have a WSDL, then the
 WSDL from the <code>endpointReference</code> MAY be used.
 The returned proxy should not be reconfigured by the client.
 If this <code>Service</code> instance has a known proxy
 port that matches the information conta