*
* @param array $options Array in format:
*
- * types => NULL|STR entity type (SQL: type = '$type' OR...see below...)
+ * types => NULL|STR entity type (SQL: type IN ('type1', 'type2') Joined with subtypes by AND...see below)
*
- * subtypes => NULL|STR entity subtype (SQL: subtype = '$subtype'...see above)
+ * subtypes => NULL|STR entity subtype (SQL: subtype IN ('subtype1', 'subtype2))
*
* type_subtype_pairs => NULL|ARR (array('type' => 'subtype')) (SQL: type = '$type' AND subtype = '$subtype') pairs
*