class SDM::Gateway

def initialize(
  id: nil,
  name: nil,
  state: nil,
  listen_address: nil,
  bind_address: nil,
  tags: nil
)
  if id != nil
    @id = id
  end
  if name != nil
    @name = name
  end
  if state != nil
    @state = state
  end
  if listen_address != nil
    @listen_address = listen_address
  end
  if bind_address != nil
    @bind_address = bind_address
  end
  if tags != nil
    @tags = tags
  end
end

def to_json(options = {})
  hash = {}
  self.instance_variables.each do |var|
    hash[var.id2name.delete_prefix("@")] = self.instance_variable_get var
  end
  hash.to_json
end