def participants(resource_id)
      http.get(participants_endpoint(resource_id)) do |response|
        Rexpense::Entities::UserCollection.build response
      end
    end
def participants(resource_id)
      http.get(participants_endpoint(resource_id)) do |response|
        Rexpense::Entities::UserCollection.build response
      end
    end
Get resource participants tags

 [API]
   Method: <tt>GET /api/v1/reimbursements/:id/participants</tt>
   Method: <tt>GET /api/v1/expenses/:id/participants</tt>
   Method: <tt>GET /api/v1/advancements/:id/participants</tt>

   Documentation: http://developers.rexpense.com/api/participants#index
   Documentation: http://developers.rexpense.com/api/expense_participants#index
   Documentation: http://developers.rexpense.com/api/reimbursement_participants#index