@type t() :: %GroundPlane.Contracts.Lease{
  attach_grant_ref: String.t() | nil,
  credential_handle_ref: String.t() | nil,
  credential_lease_ref: String.t() | nil,
  epoch: non_neg_integer(),
  expires_at: DateTime.t(),
  fence_token: String.t() | nil,
  holder: String.t(),
  installation_revision_ref: String.t() | nil,
  lease_id: String.t(),
  operation_class: String.t() | nil,
  operation_policy_ref: String.t() | nil,
  persistence_posture: map() | nil,
  policy_revision_ref: String.t() | nil,
  resource: String.t(),
  resource_account_ref: String.t() | nil,
  resource_family: String.t() | nil,
  resource_instance_ref: String.t() | nil,
  revocation_ref: String.t() | nil,
  revoked_at: DateTime.t() | nil,
  rotation_epoch: non_neg_integer() | nil,
  subject_ref: String.t() | nil,
  target_grant_revision: String.t() | nil,
  target_ref: String.t() | nil,
  tenant_id: String.t() | nil
}