Check whether the current element of the iterator is acceptable.
If a file is both blacklisted and whitelisted, it will be deemed unacceptable.
Overrides
Filter::accept() (Check whether the current element of the iterator is acceptable.)
\RecursiveIterator getChildren(
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Returns an iterator for the current entry.
Ensures that the blacklist and whitelist are preserved so they don't have to be generated each time.
Overrides
Filter::getChildren() (Returns an iterator for the current entry.)