@type t() :: %Procore.Model.PurchaseOrderContract1{
  accounting_method: String.t() | nil,
  approval_letter_date: String.t() | nil,
  assignee_id: integer() | nil,
  bill_to_address: String.t() | nil,
  contract_date: Date.t() | nil,
  delivery_date: Date.t() | nil,
  description: String.t() | nil,
  executed: boolean() | nil,
  execution_date: Date.t() | nil,
  issued_on_date: Date.t() | nil,
  letter_of_intent_date: Date.t() | nil,
  number: String.t() | nil,
  origin_code: String.t() | nil,
  origin_data: String.t() | nil,
  origin_id: String.t() | nil,
  payment_terms: String.t() | nil,
  private: boolean() | nil,
  retainage_percent: String.t() | nil,
  returned_date: Date.t() | nil,
  ship_to_address: String.t() | nil,
  ship_via: String.t() | nil,
  status: String.t() | nil,
  title: String.t() | nil,
  vendor_id: integer() | nil
}