matches
Return whether the current doc ID that .approximation is on matches. This method should only be called when the iterator is positioned -- ie. not when is -1 or DocIdSetIterator.NO_MORE_DOCS -- and at most once.
Return whether the current doc ID that .approximation is on matches. This method should only be called when the iterator is positioned -- ie. not when is -1 or DocIdSetIterator.NO_MORE_DOCS -- and at most once.