This basic type is used as the building block for passing arguments to a service, and getting back results. This is a polymorphic type (dynamic type specified as a MIME Content-Type in the Type field). It is optional because it can often be infererd from the OHSD specification of this service. Polymorphic array of elements for the process message request. Polymorphic array of elements for the process message response. Can return no result, but should be a result of type application/x-ohsd. This is the default style of SOAP message for remote service OpenHealth requests.. Returns an array of Clients.