def get(key = nil)
      key = self.id if key.nil?
      path = @api_end_point + key
      response = client.get(path) rescue nil
      return nil if response.nil?
      init_attributes(response)
      self
    end
def get(key = nil)
      key = self.id if key.nil?
      path = @api_end_point + key
      response = client.get(path) rescue nil
      return nil if response.nil?
      init_attributes(response)
      self
    end
Get resource
 @param [String] key