presto-hive/src/main/java/io/prestosql/plugin/hive/metastore/thrift/StaticMetastoreConfig.java/StaticMetastoreConfig/setMetastoreUsername
class StaticMetastoreConfig:    @Config(HIVE_METASTORE_USERNAME)
    @ConfigDescription("Optional username for accessing the Hive metastore")
    public StaticMetastoreConfig setMetastoreUsername(String metastoreUsername)
    {
        this.metastoreUsername = metastoreUsername;
        return this;
    }