SMO body structure

The body element of the SMO has a structure that corresponds with the WSDL message that defines the input or output from a given WSDL operation.

A SMO representing a request message has a body that corresponds with the operation input, and a SMO representing a response message has a body that corresponds with the operation output. The SMO body has child elements that correspond with the parts belonging to the WSDL message. The name and type of each element that become a child of the body element is as follows:

The WSDL message has a single message part that is defined by an element: The SMO body has a single child element with a name the same as the part element name, and the type is the same as the part element type. This applies to WSDL operations that follow the document literal wrapped style.
The SMO body for the following WSDL message example has one child element named operation1, with a type the same as the type of the operation1 element that is declared in or referred to from the WSDL:
```
<wsdl:message name="operation1RequestMsg">
    <wsdl:part element="tns:operation1" name="operation1Parameters"/>
</wsdl:message>
```
All other WSDL message formats: The SMO body has one child element for every WSDL message part. The element name is the same as the part name, and the element type is the effective type of the WSDL message part.
The SMO body for the following WSDL message example has two child elements, arg1 and arg2, both of type string:
```
<wsdl:message name="operation2RequestMsg">
    <wsdl:part type="xsd:string" name="arg1"/>
    <wsdl:part type="xsd:string" name="arg2"/>
</wsdl:message>
```