This element serves as the head of a substitution group
for extensibility elements that wish to appear as a child
of wsdl:binding and/or wsdl:service
Abstract Element bindingAndServiceExt
The bindingAndServiceExt element cannot have "xsi:nil" as an attribute.
The bindingAndServiceExt 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 a child
of wsdl:binding and/or wsdl:service
</xs:documentation>