@type t() :: %PolarExpress.Schemas.BenefitDownloadablesUpdate{
  description: String.t() | nil,
  metadata:
    %{
      required(String.t()) => String.t() | integer() | float() | boolean() | nil
    }
    | nil,
  properties:
    PolarExpress.Schemas.BenefitDownloadablesCreateProperties.t() | nil,
  type: String.t() | nil
}

• description - The description of the benefit. Will be displayed on products having this benefit. Nullable.
• metadata - Key-value object allowing you to store additional information.

The key must be a string with a maximum length of 40 characters. The value must be either:

• A string with a maximum length of 500 characters
• An integer
• A floating-point number
• A boolean

You can store up to 50 key-value pairs.

• properties - Nullable.
• type