@type t() :: %Procore.Model.ChangeOrder1{
  attachment_ids: [integer()] | nil,
  batch_id: integer() | nil,
  change_order_change_reason_id: integer() | nil,
  contract_id: integer(),
  "custom_field_%{custom_field_definition_id}":
    Procore.Model.WorkOrderContractCustomFieldCustomFieldDefinitionId.t() | nil,
  description: String.t() | nil,
  designated_reviewer_id: integer() | nil,
  drawing_revision_ids: [integer()] | nil,
  due_date: Date.t() | nil,
  executed: boolean() | nil,
  field_change: boolean() | nil,
  file_version_ids: [integer()] | nil,
  form_ids: [integer()] | nil,
  image_ids: [integer()] | nil,
  invoiced_date: Date.t() | nil,
  location_id: integer() | nil,
  number: String.t() | nil,
  paid: boolean() | nil,
  paid_date: Date.t() | nil,
  private: boolean() | nil,
  received_from_id: integer() | nil,
  reference: String.t() | nil,
  revision: integer() | nil,
  schedule_impact_amount: integer() | nil,
  signature_required: boolean() | nil,
  signed_change_order_received_date: Date.t() | nil,
  status: String.t() | nil,
  title: String.t() | nil,
  upload_ids: [String.t()] | nil
}