Creates a new ClusterGcpConfig.
accessConfig The configuration of access to the Kafka cluster.
kmsKey The Cloud KMS Key name to use for encryption. The key must be located in the same region as the cluster and cannot be changed. Must be in the format projects/PROJECT_ID/locations/LOCATION/keyRings/KEY_RING/cryptoKeys/KEY.
The Cloud KMS Key name to use for encryption. The key must be located in the same region as the cluster and cannot be changed. Must be in the format projects/PROJECT_ID/locations/LOCATION/keyRings/KEY_RING/cryptoKeys/KEY.