Jason sais:

The property mechanism was designed to be extendable (detyped), so vender properties are allowed.

From the spec:

The _setProperty method sets the value of a property configured on the stub instance.
This method throws the javax.xml.rpc.JAXRPCException in the following cases:
? If an optional standard property name is specified, however this Stub implementation class does not support the configuration of this property.
? If an invalid or unsupported property name is specified or if a value of mismatched property type is passed. An example is an illegal property with the standard property name prefix javax.xml.rpc.
? If there is any error in the configuration of a valid property.

The only thing I can see that the CTS tests is bullet 2.

There are two ways that we can support this and still be CTS compliant:
1. Register all known properties (standard and proprietary) in a hashset, and throw an exception if a passed property is not present.
2. Check that the String prefix matches javax.xml.rpc. , and if so verify that a standard property exists.