Adding methods to a SOAP webservice in production use

I have a SOAP webservice running in production and being used by multiple different client implementations (written in .NET, PHP, Java, Ruby, Delphi...) and I need to add a method to the webservice.

My question is: is it possible that adding something to the current WSDL can break any of the client implementations? What I mean is there some SOAP-framework which goes berserk if the WSDL suddenly changes server side? I know that modifyi开发者_JAVA技巧ng an existing method (e.g. changing a parameter's type) will break stuff but what about adding a totally new method?

I'm guessing it should be OK but thought I'd ask if someone has run into problems when doing this.

should be OK, since the WSDL is normally used upon method stub generation, not during each call to a web service. Just make sure you don't change any parameter or return type