API server requires to specify a type of the passed value
<anyType xsi:type="xsd:string">vvvvvvvvv</anyType>
But soapclient
generates request without xsi:type="xsd:string"
<anyType >vvvvvvvvv</anyType>
How can I make soapclient to add xsi:type="xsd:string"
to the request?