Zend_Soap_Wsdl class is used by
Zend_Soap_Server component internally to operate with WSDL
documents. Nevertheless, you could also use functionality provided by this class for
your own needs. The
Zend_Soap_Wsdl package contains both a parser
and a builder of WSDL documents.
If you don't plan to do this, you can skip this documentation section.