class Github::Client::Projects::Columns

def list(*args)
  arguments(args, required: [:project_id])
  params = arguments.params
  params["accept"] ||= ::Github::Client::Projects::PREVIEW_MEDIA
  response = get_request("/projects/#{arguments.project_id}/columns", params)
  return response unless block_given?
  response.each { |el| yield el }
end