public UpdateEnvironmentResult withPlatformArn(String platformArn) {
        setPlatformArn(platformArn);
        return this;
    }
<p>
The ARN of the platform version.
</p>

@param platformArn
       The ARN of the platform version.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-elasticbeanstalk/src/main/java/com/amazonaws/services/elasticbeanstalk/model/UpdateEnvironmentResult.java