@type t() :: %Alpa.Models.CorporateAction{
  ca_sub_type: String.t() | nil,
  ca_type: String.t() | nil,
  cash: Decimal.t() | nil,
  corporate_action_id: String.t() | nil,
  declaration_date: Date.t() | nil,
  ex_date: Date.t() | nil,
  id: String.t() | nil,
  initiating_original_cusip: String.t() | nil,
  initiating_symbol: String.t() | nil,
  new_rate: Decimal.t() | nil,
  old_rate: Decimal.t() | nil,
  payable_date: Date.t() | nil,
  record_date: Date.t() | nil,
  target_original_cusip: String.t() | nil,
  target_symbol: String.t() | nil
}