sig
  type t =
      Default
    | FromBody
    | FromBodyIfNeeded
    | FromBodyOrNow
    | NoChange
    | Now
    | NowIfNeeded
  val to_string :
    GapiDriveV2Service.FilesResource.ModifiedDateBehavior.t -> string
  val of_string :
    string -> GapiDriveV2Service.FilesResource.ModifiedDateBehavior.t
end