@type t() :: %Inttegro.CreateSMSMessageTemplateRequest{
  about: String.t() | nil,
  channel: Inttegro.MessageTemplateChannel.t(),
  locale: String.t() | nil,
  name: String.t(),
  purpose: String.t(),
  sms: Inttegro.MessageTemplateSMSContentInput.t(),
  variables: [Inttegro.MessageTemplateVariableInput.t()] | nil
}