return module name.

def getServiceModuleName(self):
        '''return module name.
        '''
        name = GetModuleBaseNameFromWSDL(self.wsdl)
        if not name:
            raise WsdlGeneratorError, 'could not determine a service name'
        
        if self.server_module_suffix is None:
            return name
        return '%s%s' %(name, self.server_module_suffix)