presto-hive/src/main/java/io/prestosql/plugin/hive/s3/HiveS3Config.java/HiveS3Config/setS3UserAgentPrefix
class HiveS3Config:    @Config("hive.s3.user-agent-prefix")
    @ConfigDescription("The user agent prefix to use for S3 calls")
    public HiveS3Config setS3UserAgentPrefix(String s3UserAgentPrefix)
    {
        this.s3UserAgentPrefix = s3UserAgentPrefix;
        return this;
    }