@type t() :: %DocuSign.Model.ExternalFolder{
  endPosition: String.t() | nil,
  errorDetails: DocuSign.Model.ExternalDocServiceErrorDetails.t() | nil,
  id: String.t() | nil,
  items: [DocuSign.Model.ExternalFile.t()] | nil,
  name: String.t() | nil,
  nextUri: String.t() | nil,
  previousUri: String.t() | nil,
  resultSetSize: String.t() | nil,
  startPosition: String.t() | nil,
  totalSetSize: String.t() | nil
}