kmsKeyName

The resource ID of a Cloud KMS key. If set, the database created will be a Customer-managed Encryption Key (CMEK) database encrypted with this key. This feature is allowlist only in initial launch. Only keys in the same location as this database are allowed to be used for encryption. For Firestore's nam5 multi-region, this corresponds to Cloud KMS multi-region us. For Firestore's eur3 multi-region, this corresponds to Cloud KMS multi-region europe. See https://cloud.google.com/kms/docs/locations. This value should be the KMS key resource ID in the format of projects/{project_id}/locations/{kms_location}/keyRings/{key_ring}/cryptoKeys/{crypto_key}. How to retrieve this resource ID is listed at https://cloud.google.com/kms/docs/getting-resource-ids#getting_the_id_for_a_key_and_version.