class Travis::Client::Repository

def job(number)
  build_number = number.to_s[/^\d+/] or return nil
  build        = build(build_number) or return nil
  job          = build.jobs.detect { |j| j.number == number } if number != build_number
  job        ||= build.jobs.first if build and build.jobs.size == 1
  job
end