Provides struct and type for a RefundDispute
@type t() :: %Polarex.RefundDispute{ amount: integer(), closed: boolean(), created_at: DateTime.t(), currency: String.t(), id: String.t(), modified_at: DateTime.t() | nil, order_id: String.t(), payment_id: String.t(), resolved: boolean(), status: String.t(), tax_amount: integer() }