This element serves as the head of a substitution group
for extensibility elements that wish to appear as children of
wsdl:interface/wsdl:operation/wsdl:fault
Abstract Element interfaceOpFaultExt
The interfaceOpFaultExt element cannot have "xsi:nil" as an attribute.
The interfaceOpFaultExt element in XML instance can be substituted with other elements.
<xs:documentation>
This element serves as the head of a substitution group
for extensibility elements that wish to appear as children of
wsdl:interface/wsdl:operation/wsdl:fault
</xs:documentation>