Optional options: { Optional wildcardProtected $filterA query is marked as needing to be requeried if it can't be completely lowered
from V4 to V3. In this case, the resultant V3 query should first be run against
the V3 database. The resultant HGrid from the V3 database should then be filtered
down further using HFilter#eval(...) to derive the final result.
Protected lastProtected appendGenerated using TypeDoc
Generates a Haystack version 3 filter string.
This filter lowers from a Haystack version 4 filter to a a Haystack version 3 filter. A Haystack version 3 filter is not def aware.