code: protected SerializationPolicy doGetSerializationPolicy(HttpServletRequest request, String moduleBaseURL,
  			String strongName) {
  		if (getSerializationPolicyLocator() == null) {
  			return super.doGetSerializationPolicy(request, moduleBaseURL, strongName);
  		} else {
  			return getSerializationPolicyLocator().loadPolicy(request, moduleBaseURL, strongName);
  		}
  	}
docs: Gets the {@link SerializationPolicy} for given module base URL and strong name if there is one.
  
  Use {@link #setSerializationPolicyLocator(SerializationPolicyLocator)} to provide an alternative approach.
  
  @param request the HTTP request being serviced
  @param moduleBaseURL as specified in the incoming payload
  @param strongName a strong name that uniquely identifies a serialization policy file
  @return a {@link SerializationPolicy} for the given module base URL and strong name, or <code>null</code> if
  there is none