presto-kudu/src/main/java/io/prestosql/plugin/kudu/schema/SchemaEmulationByTableNameConvention.java/SchemaEmulationByTableNameConvention/getPrefixForTablesOfSchema
class SchemaEmulationByTableNameConvention:    @Override
    public String getPrefixForTablesOfSchema(String schemaName)
    {
        if (DEFAULT_SCHEMA.equals(schemaName)) {
            return "";
        }
        else {
            return commonPrefix + schemaName + ".";
        }
    }