class UserAgent::Browsers::PlayStation

def self.extend?(agent)
  !agent.application.nil? && !agent.application.comment.nil? && agent.application.comment.any? && (
    agent.application.comment.first.include?('PLAYSTATION 3') ||
    agent.application.comment.first.include?('PlayStation Vita') ||
    agent.application.comment.first.include?('PlayStation 4')
  )
end