Returns the single instance of STSAttributeProvider
Use the usual services mechanism to find implementing class. If not
found, use com.sun.xml.ws.security.trust.impl.DefaultSTSAttributeProvider
by default.
Returns the single instance of STSAuthorizationProvider
Use the usual services mechanism to find implementing class. If not
found, use com.sun.xml.ws.security.trust.impl.DefaultSTSAuthorizationProvider
by default.