def create_read_replica(options = {})
      options = options.merge(source_db_instance_identifier: @id)
      resp = @client.create_db_instance_read_replica(options)
      DBInstance.new(
        id: resp.data.db_instance.db_instance_identifier,
        data: resp.data.db_instance,
        client: @client
      )
    end
def create_read_replica(options = {})
      options = options.merge(source_db_instance_identifier: @id)
      resp = @client.create_db_instance_read_replica(options)
      DBInstance.new(
        id: resp.data.db_instance.db_instance_identifier,
        data: resp.data.db_instance,
        client: @client
      )
    end
@example Request syntax with placeholder values

   dbinstance = db_instance.create_read_replica({
     db_instance_identifier: "String", # required
     db_instance_class: "String",
     availability_zone: "String",
     port: 1,
     multi_az: false,
     auto_minor_version_upgrade: false,
     iops: 1,
     option_group_name: "String",
     publicly_accessible: false,
     tags: [
       {
         key: "String",
         value: "String",
       },
     ],
     db_subnet_group_name: "String",
     vpc_security_group_ids: ["String"],
     storage_type: "String",
     copy_tags_to_snapshot: false,
     monitoring_interval: 1,
     monitoring_role_arn: "String",
     kms_key_id: "String",
     pre_signed_url: "String",
     enable_iam_database_authentication: false,
     enable_performance_insights: false,
     performance_insights_kms_key_id: "String",
     performance_insights_retention_period: 1,
     enable_cloudwatch_logs_exports: ["String"],
     processor_features: [
       {
         name: "String",
         value: "String",
       },
     ],
     use_default_processor_features: false,
     deletion_protection: false,
     source_region: "String",
   })
 @param [Hash] options ({})
 @option options [required, String] :db_instance_identifier
   The DB instance identifier of the Read Replica. This identifier is the
   unique key that identifies a DB instance. This parameter is stored as
   a lowercase string.
 @option options [String] :db_instance_class
   The compute and memory capacity of the Read Replica, for example,
   `db.m4.large`. Not all DB instance classes are available in all AWS
   Regions, or for all database engines. For the full list of DB instance
   classes, and availability for your engine, see [DB Instance Class][1]
   in the *Amazon RDS User Guide.*

   Default: Inherits from the source DB instance.



   [1]: https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/Concepts.DBInstanceClass.html
 @option options [String] :availability_zone
   The Amazon EC2 Availability Zone that the Read Replica is created in.

   Default: A random, system-chosen Availability Zone in the endpoint's
   AWS Region.

   Example: `us-east-1d`
 @option options [Integer] :port
   The port number that the DB instance uses for connections.

   Default: Inherits from the source DB instance

   Valid Values: `1150-65535`
 @option options [Boolean] :multi_az
   Specifies whether the Read Replica is in a Multi-AZ deployment.

   You can create a Read Replica as a Multi-AZ DB instance. RDS creates a
   standby of your replica in another Availability Zone for failover
   support for the replica. Creating your Read Replica as a Multi-AZ DB
   instance is independent of whether the source database is a Multi-AZ
   DB instance.
 @option options [Boolean] :auto_minor_version_upgrade
   Indicates that minor engine upgrades are applied automatically to the
   Read Replica during the maintenance window.

   Default: Inherits from the source DB instance
 @option options [Integer] :iops
   The amount of Provisioned IOPS (input/output operations per second) to
   be initially allocated for the DB instance.
 @option options [String] :option_group_name
   The option group the DB instance is associated with. If omitted, the
   option group associated with the source instance is used.
 @option options [Boolean] :publicly_accessible
   Specifies the accessibility options for the DB instance. A value of
   true specifies an Internet-facing instance with a publicly resolvable
   DNS name, which resolves to a public IP address. A value of false
   specifies an internal instance with a DNS name that resolves to a
   private IP address. For more information, see CreateDBInstance.
 @option options [Array<Types::Tag>] :tags
   A list of tags. For more information, see [Tagging Amazon RDS
   Resources][1] in the *Amazon RDS User Guide.*



   [1]: https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/USER_Tagging.html
 @option options [String] :db_subnet_group_name
   Specifies a DB subnet group for the DB instance. The new DB instance
   is created in the VPC associated with the DB subnet group. If no DB
   subnet group is specified, then the new DB instance is not created in
   a VPC.

   Constraints:

   * Can only be specified if the source DB instance identifier specifies
     a DB instance in another AWS Region.

   * If supplied, must match the name of an existing DBSubnetGroup.

   * The specified DB subnet group must be in the same AWS Region in
     which the operation is running.

   * All Read Replicas in one AWS Region that are created from the same
     source DB instance must either:&gt;

     * Specify DB subnet groups from the same VPC. All these Read
       Replicas are created in the same VPC.

     * Not specify a DB subnet group. All these Read Replicas are created
       outside of any VPC.

   Example: `mySubnetgroup`
 @option options [Array<String>] :vpc_security_group_ids
   A list of EC2 VPC security groups to associate with the Read Replica.

   Default: The default EC2 VPC security group for the DB subnet group's
   VPC.
 @option options [String] :storage_type
   Specifies the storage type to be associated with the Read Replica.

   Valid values: `standard | gp2 | io1`

   If you specify `io1`, you must also include a value for the `Iops`
   parameter.

   Default: `io1` if the `Iops` parameter is specified, otherwise
   `standard`
 @option options [Boolean] :copy_tags_to_snapshot
   True to copy all tags from the Read Replica to snapshots of the Read
   Replica, and otherwise false. The default is false.
 @option options [Integer] :monitoring_interval
   The interval, in seconds, between points when Enhanced Monitoring
   metrics are collected for the Read Replica. To disable collecting
   Enhanced Monitoring metrics, specify 0. The default is 0.

   If `MonitoringRoleArn` is specified, then you must also set
   `MonitoringInterval` to a value other than 0.

   Valid Values: `0, 1, 5, 10, 15, 30, 60`
 @option options [String] :monitoring_role_arn
   The ARN for the IAM role that permits RDS to send enhanced monitoring
   metrics to Amazon CloudWatch Logs. For example,
   `arn:aws:iam:123456789012:role/emaccess`. For information on creating
   a monitoring role, go to [To create an IAM role for Amazon RDS
   Enhanced Monitoring][1] in the *Amazon RDS User Guide*.

   If `MonitoringInterval` is set to a value other than 0, then you must
   supply a `MonitoringRoleArn` value.



   [1]: https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/USER_Monitoring.html#USER_Monitoring.OS.IAMRole
 @option options [String] :kms_key_id
   The AWS KMS key ID for an encrypted Read Replica. The KMS key ID is
   the Amazon Resource Name (ARN), KMS key identifier, or the KMS key
   alias for the KMS encryption key.

   If you create an encrypted Read Replica in the same AWS Region as the
   source DB instance, then you do not have to specify a value for this
   parameter. The Read Replica is encrypted with the same KMS key as the
   source DB instance.

   If you create an encrypted Read Replica in a different AWS Region,
   then you must specify a KMS key for the destination AWS Region. KMS
   encryption keys are specific to the AWS Region that they are created
   in, and you can't use encryption keys from one AWS Region in another
   AWS Region.

   You can't create an encrypted Read Replica from an unencrypted DB
   instance.
 @option options [String] :pre_signed_url
   The URL that contains a Signature Version 4 signed request for the
   `CreateDBInstanceReadReplica` API action in the source AWS Region that
   contains the source DB instance.

   You must specify this parameter when you create an encrypted Read
   Replica from another AWS Region by using the Amazon RDS API. You can
   specify the `--source-region` option instead of this parameter when
   you create an encrypted Read Replica from another AWS Region by using
   the AWS CLI.

   The presigned URL must be a valid request for the
   `CreateDBInstanceReadReplica` API action that can be executed in the
   source AWS Region that contains the encrypted source DB instance. The
   presigned URL request must contain the following parameter values:

   * `DestinationRegion` - The AWS Region that the encrypted Read Replica
     is created in. This AWS Region is the same one where the
     `CreateDBInstanceReadReplica` action is called that contains this
     presigned URL.

     For example, if you create an encrypted DB instance in the us-west-1
     AWS Region, from a source DB instance in the us-east-2 AWS Region,
     then you call the `CreateDBInstanceReadReplica` action in the
     us-east-1 AWS Region and provide a presigned URL that contains a
     call to the `CreateDBInstanceReadReplica` action in the us-west-2
     AWS Region. For this example, the `DestinationRegion` in the
     presigned URL must be set to the us-east-1 AWS Region.

   * `KmsKeyId` - The AWS KMS key identifier for the key to use to
     encrypt the Read Replica in the destination AWS Region. This is the
     same identifier for both the `CreateDBInstanceReadReplica` action
     that is called in the destination AWS Region, and the action
     contained in the presigned URL.

   * `SourceDBInstanceIdentifier` - The DB instance identifier for the
     encrypted DB instance to be replicated. This identifier must be in
     the Amazon Resource Name (ARN) format for the source AWS Region. For
     example, if you are creating an encrypted Read Replica from a DB
     instance in the us-west-2 AWS Region, then your
     `SourceDBInstanceIdentifier` looks like the following example:
     `arn:aws:rds:us-west-2:123456789012:instance:mysql-instance1-20161115`.

   To learn how to generate a Signature Version 4 signed request, see
   [Authenticating Requests: Using Query Parameters (AWS Signature
   Version 4)][1] and [Signature Version 4 Signing Process][2].



   [1]: https://docs.aws.amazon.com/AmazonS3/latest/API/sigv4-query-string-auth.html
   [2]: https://docs.aws.amazon.com/general/latest/gr/signature-version-4.html
 @option options [Boolean] :enable_iam_database_authentication
   True to enable mapping of AWS Identity and Access Management (IAM)
   accounts to database accounts, and otherwise false.

   You can enable IAM database authentication for the following database
   engines

   * For MySQL 5.6, minor version 5.6.34 or higher

   * For MySQL 5.7, minor version 5.7.16 or higher

   * Aurora MySQL 5.6 or higher

   Default: `false`
 @option options [Boolean] :enable_performance_insights
   True to enable Performance Insights for the Read Replica, and
   otherwise false.

   For more information, see [Using Amazon Performance Insights][1] in
   the *Amazon RDS User Guide*.



   [1]: https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/USER_PerfInsights.html
 @option options [String] :performance_insights_kms_key_id
   The AWS KMS key identifier for encryption of Performance Insights
   data. The KMS key ID is the Amazon Resource Name (ARN), KMS key
   identifier, or the KMS key alias for the KMS encryption key.
 @option options [Integer] :performance_insights_retention_period
   The amount of time, in days, to retain Performance Insights data.
   Valid values are 7 or 731 (2 years).
 @option options [Array<String>] :enable_cloudwatch_logs_exports
   The list of logs that the new DB instance is to export to CloudWatch
   Logs. The values in the list depend on the DB engine being used. For
   more information, see [Publishing Database Logs to Amazon CloudWatch
   Logs ][1] in the *Amazon RDS User Guide*.



   [1]: https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/USER_LogAccess.html#USER_LogAccess.Procedural.UploadtoCloudWatch
 @option options [Array<Types::ProcessorFeature>] :processor_features
   The number of CPU cores and the number of threads per core for the DB
   instance class of the DB instance.
 @option options [Boolean] :use_default_processor_features
   A value that specifies that the DB instance class of the DB instance
   uses its default processor features.
 @option options [Boolean] :deletion_protection
   Indicates if the DB instance should have deletion protection enabled.
   The database can't be deleted when this value is set to true. The
   default is false. For more information, see [ Deleting a DB
   Instance][1].



   [1]: https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/USER_DeleteInstance.html
 @option options [String] :destination_region
 @option options [String] :source_region
   The source region of the snapshot. This is only needed when the
   shapshot is encrypted and in a different region.
 @return [DBInstance]