tcn.lms.element.v1alpha1.AbsentPolicyType(AbsentPolicyType)
AbsentPolicyType represents the policy for handling absent records.
(-- api-linter: core::0126::unspecified=disabled
aip.dev/not-precedent: We need to keep the numbering the same since this existed before we started aip . --)
"ABSENT_POLICY_TYPE_KEEP"