presto-main/src/main/java/io/prestosql/connector/informationschema/InformationSchemaPageSourceProvider.java/InformationSchemaPageSourceProvider/createPageSource
class InformationSchemaPageSourceProvider:    @Override
    public ConnectorPageSource createPageSource(
            ConnectorTransactionHandle transaction,
            ConnectorSession session,
            ConnectorSplit split,
            ConnectorTableHandle tableHandle,
            List<ColumnHandle> columns)
    {
        return new InformationSchemaPageSource(
                ((FullConnectorSession) session).getSession(),
                metadata,
                accessControl,
                (InformationSchemaTableHandle) tableHandle,
                columns);
    }