public String getSecretArn() {
        return this.secretArn;
    }
The ARN of the secret that you created in AWS Secrets Manager to store the encryption key. This parameter is
required for static key encryption and is not valid for SPEKE encryption.

@return The ARN of the secret that you created in AWS Secrets Manager to store the encryption key. This parameter
        is required for static key encryption and is not valid for SPEKE encryption.
aws-java-sdk-mediaconnect/src/main/java/com/amazonaws/services/mediaconnect/model/UpdateEncryption.java