@type t() :: %LINE.Bot.MessagingApi.Model.FlexText{
  action: LINE.Bot.Model.Action.t() | nil,
  adjustMode: String.t() | nil,
  align: String.t() | nil,
  color: String.t() | nil,
  contents: [LINE.Bot.Model.FlexSpan.t()] | nil,
  decoration: String.t() | nil,
  flex: integer() | nil,
  gravity: String.t() | nil,
  lineSpacing: String.t() | nil,
  margin: String.t() | nil,
  maxLines: integer() | nil,
  offsetBottom: String.t() | nil,
  offsetEnd: String.t() | nil,
  offsetStart: String.t() | nil,
  offsetTop: String.t() | nil,
  position: String.t() | nil,
  scaling: boolean() | nil,
  size: String.t() | nil,
  style: String.t() | nil,
  text: String.t() | nil,
  type: String.t(),
  weight: String.t() | nil,
  wrap: boolean() | nil
}