This element serves as the head of a substitution group
for extensibility elements that wish to appear after the wsdl:types element
( potentially interleaved with wsdl:message/interface/binding/service
Abstract Element postTypes
The postTypes element cannot have "xsi:nil" as an attribute.
The postTypes 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 after the wsdl:types element
( potentially interleaved with wsdl:message/interface/binding/service
</xs:documentation>