I am trying to create a simple jenkins plug-in that will run a job but Project.doBuild() requires StaplerRequest and StaplerResponse.

What is the Stapler (org.kohsuke.stapler.Stapler), StaplerRequest(org.kohsuke.stapler.StaplerRequest), and StaplerResponse(org.kohsuke.stapler.StaplerResponse)? What do they do and how do they work?

Thanks for any help.