src/main/java/com/amazonaws/services/neptune/AddClone.java [43:125]:
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    @Option(name = {"--clone-cluster-instance-type"}, description = "Instance type for cloned cluster (by default neptune-export will use the same instance type as the source cluster).")
    @Once
    @AllowedValues(allowedValues = {
            "db.r4.large",
            "db.r4.xlarge",
            "db.r4.2xlarge",
            "db.r4.4xlarge",
            "db.r4.8xlarge",
            "db.r5.large",
            "db.r5.xlarge",
            "db.r5.2xlarge",
            "db.r5.4xlarge",
            "db.r5.8xlarge",
            "db.r5.12xlarge",
            "db.r5.16xlarge",
            "db.r5.24xlarge",
            "db.r5d.large",
            "db.r5d.xlarge",
            "db.r5d.2xlarge",
            "db.r5d.4xlarge",
            "db.r5d.8xlarge",
            "db.r5d.12xlarge",
            "db.r5d.16xlarge",
            "db.r5d.24xlarge",
            "db.r6g.large",
            "db.r6g.xlarge",
            "db.r6g.2xlarge",
            "db.r6g.4xlarge",
            "db.r6g.8xlarge",
            "db.r6g.12xlarge",
            "db.r6g.16xlarge",
            "db.x2g.large",
            "db.x2g.xlarge",
            "db.x2g.2xlarge",
            "db.x2g.4xlarge",
            "db.x2g.8xlarge",
            "db.x2g.12xlarge",
            "db.x2g.16xlarge",
            "db.t3.medium",
            "db.t4g.medium",
            "r4.large",
            "r4.xlarge",
            "r4.2xlarge",
            "r4.4xlarge",
            "r4.8xlarge",
            "r5.large",
            "r5.xlarge",
            "r5.2xlarge",
            "r5.4xlarge",
            "r5.8xlarge",
            "r5.12xlarge",
            "r5.16xlarge",
            "r5.24xlarge",
            "r5d.large",
            "r5d.xlarge",
            "r5d.2xlarge",
            "r5d.4xlarge",
            "r5d.8xlarge",
            "r5d.12xlarge",
            "r5d.16xlarge",
            "r5d.24xlarge",
            "r6g.large",
            "r6g.xlarge",
            "r6g.2xlarge",
            "r6g.4xlarge",
            "r6g.8xlarge",
            "r6g.12xlarge",
            "r6g.16xlarge",
            "x2g.large",
            "x2g.xlarge",
            "x2g.2xlarge",
            "x2g.4xlarge",
            "x2g.8xlarge",
            "x2g.12xlarge",
            "x2g.16xlarge",
            "t3.medium",
            "t4g.medium"})
    private String cloneClusterInstanceType;

    @Option(name = {"--clone-cluster-replica-count"}, description = "Number of read replicas to add to the cloned cluster (default, 0).")
    @Once
    @IntegerRange(min = 0, minInclusive = true, max = 15, maxInclusive = true)
    private int replicaCount = 0;
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src/main/java/com/amazonaws/services/neptune/cli/CloneClusterModule.java [29:111]:
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    @Option(name = {"--clone-cluster-instance-type"}, description = "Instance type for cloned cluster (by default neptune-export will use the same instance type as the source cluster).")
    @Once
    @AllowedValues(allowedValues = {
            "db.r4.large",
            "db.r4.xlarge",
            "db.r4.2xlarge",
            "db.r4.4xlarge",
            "db.r4.8xlarge",
            "db.r5.large",
            "db.r5.xlarge",
            "db.r5.2xlarge",
            "db.r5.4xlarge",
            "db.r5.8xlarge",
            "db.r5.12xlarge",
            "db.r5.16xlarge",
            "db.r5.24xlarge",
            "db.r5d.large",
            "db.r5d.xlarge",
            "db.r5d.2xlarge",
            "db.r5d.4xlarge",
            "db.r5d.8xlarge",
            "db.r5d.12xlarge",
            "db.r5d.16xlarge",
            "db.r5d.24xlarge",
            "db.r6g.large",
            "db.r6g.xlarge",
            "db.r6g.2xlarge",
            "db.r6g.4xlarge",
            "db.r6g.8xlarge",
            "db.r6g.12xlarge",
            "db.r6g.16xlarge",
            "db.x2g.large",
            "db.x2g.xlarge",
            "db.x2g.2xlarge",
            "db.x2g.4xlarge",
            "db.x2g.8xlarge",
            "db.x2g.12xlarge",
            "db.x2g.16xlarge",
            "db.t3.medium",
            "db.t4g.medium",
            "r4.large",
            "r4.xlarge",
            "r4.2xlarge",
            "r4.4xlarge",
            "r4.8xlarge",
            "r5.large",
            "r5.xlarge",
            "r5.2xlarge",
            "r5.4xlarge",
            "r5.8xlarge",
            "r5.12xlarge",
            "r5.16xlarge",
            "r5.24xlarge",
            "r5d.large",
            "r5d.xlarge",
            "r5d.2xlarge",
            "r5d.4xlarge",
            "r5d.8xlarge",
            "r5d.12xlarge",
            "r5d.16xlarge",
            "r5d.24xlarge",
            "r6g.large",
            "r6g.xlarge",
            "r6g.2xlarge",
            "r6g.4xlarge",
            "r6g.8xlarge",
            "r6g.12xlarge",
            "r6g.16xlarge",
            "x2g.large",
            "x2g.xlarge",
            "x2g.2xlarge",
            "x2g.4xlarge",
            "x2g.8xlarge",
            "x2g.12xlarge",
            "x2g.16xlarge",
            "t3.medium",
            "t4g.medium"})
    private String cloneClusterInstanceType;

    @Option(name = {"--clone-cluster-replica-count"}, description = "Number of read replicas to add to the cloned cluster (default, 0).")
    @Once
    @IntegerRange(min = 0, minInclusive = true, max = 15, maxInclusive = true)
    private int replicaCount = 0;
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