@type t() :: %Paypal.Common.Link{
  enc_type: String.t() | nil,
  href: String.t() | nil,
  method: any() | nil,
  rel: String.t() | nil
}

The possible values for the links are:

• enc_type is the kind of encoding the request is providing or requiring. It's not compulsory for most of the links.
• href is the URL for the link.
• rel is the name for the link. The name is based on the RFC-8288.
• method is the HTTP method that is needed for the request.