presto-hive/src/main/java/io/prestosql/plugin/hive/metastore/file/DatabaseMetadata.java/DatabaseMetadata/DatabaseMetadata
class DatabaseMetadata:    public DatabaseMetadata(Database database)
    {
        this.ownerName = database.getOwnerName();
        this.ownerType = database.getOwnerType();
        this.comment = database.getComment();
        this.parameters = database.getParameters();
    }