@type t() :: %DocuSign.Model.Groups{
  endPosition: String.t() | nil,
  groups: [DocuSign.Model.Group.t()] | nil,
  nextUri: String.t() | nil,
  previousUri: String.t() | nil,
  resultSetSize: String.t() | nil,
  startPosition: String.t() | nil,
  totalSetSize: String.t() | nil
}