class Github::Client::Issues::Labels

def list(*args)
  arguments(args, required: [:user, :repo])
  params = arguments.params
  user = arguments.user
  repo = arguments.repo
  response = if (milestone_id = params.delete('milestone_id'))
    get_request("/repos/#{user}/#{repo}/milestones/#{milestone_id}/labels", params)
  elsif (issue_id = params.delete('issue_id'))
    get_request("/repos/#{user}/#{repo}/issues/#{issue_id}/labels", params)
  else
    get_request("/repos/#{user}/#{repo}/labels", params)
  end
  return response unless block_given?
  response.each { |el| yield el }
end