webmethods design pattern

I have attended an interview and they have asked me what design patterns have you worked on?
I am new to webMethods and do not have an idea of design patterns concerned with webMethods. can someone please help me how to answer this question?

what are the different types of design patterns available?



I have gone through the above links.

I want to know, how these are implemented in webMethods development projects.

Can someone explain any sample design pattern how it was implemented in their projects.