The class for the property. If "ref" is specified,
this class is used to cast the looked up reference
to make sure the Object is of the correct type.
If ref is not set and value is not set, this class
is used to create a bean. The class must have either
a default constructor, a constructor that takes an
org.apache.cxf.endpoint.Endpoint, or a constructor
that takes a org.apache.cxf.endpoint.Endpoint and