* This method generates D code from the preSql data, which can be mixed in for generating the resulting sql and the resulting Variant[] array.
* The variable sql_ will contain the generated SQL.
* The variable args_ is the Variant[] array.
* Use createQuery for directly generating the resulting SQL and args.
* Params:
* preSql = The to be processed SQL containing D expressions in #{} blocks, sub blocks in {} and declarations in ${}.
* Returns: D code which can be mixed in.
* This method generates D code from the preSql data, which can be mixed in for generating the resulting sql and the resulting Variant[] array. * The variable sql_ will contain the generated SQL. * The variable args_ is the Variant[] array. * Use createQuery for directly generating the resulting SQL and args. * Params: * preSql = The to be processed SQL containing D expressions in #{} blocks, sub blocks in {} and declarations in ${}. * Returns: D code which can be mixed in.