Multiple Services using one WSDL

First, I have to praise the effort and success WSO2 Oxygen developers have accomplished in creating this component so easy to integrate and use. I have one question and I hope to get the answer from here.

When exposing Services as webservices, I would like to know if there is a way in which I can expose only one WSDL even if I have multiple service classes. If this can be accomplished, how would the configuration be like?
Our task is to migrate an application from Weblogic to Tomcat. In weblogic, there was a tool that would expose all our services in one WSDL and we would like to keep it this way. Any help or suggestions would be greatly appreciated.

Thank you,

Juan