urn:opengis:spec:wfs:wsdl-1.1:interfaces:1.0.1 2004-06-01 This is the the normative abstract service interface definition for the OpenGIS Web Feature Service, v1.1. The WSDL 1.1 syntax is used to describe the interface signatures and message structures. Convenience schema that defines all common WFS message elements. This interface corresponds to the WFS (read-only) capability class.