presto-base-jdbc/src/main/java/io/prestosql/plugin/jdbc/jmx/StatisticsAwareJdbcClient.java/StatisticsAwareJdbcClient/schemaExists
class StatisticsAwareJdbcClient:    @Override
    public boolean schemaExists(JdbcIdentity identity, String schema)
    {
        return stats.schemaExists.wrap(() -> getDelegate().schemaExists(identity, schema));
    }