I think that using missingFilter when termsFilter has empty terms list is
misleading.
I understand termsFilter like: return only those documents, where a field
has one of the values provided as terms.
So empty terms list in termsFilter == doesn't return anything ==
notFilter(matchAllFilter()).
Also notFilter(termsFilter with empty terms list) == matchAllFilter.
I use this behaviour of ES 0.19 to exclude some documents from results:
notFilter(termsFilter("documentType", ))
If is empty then all documents should be
returned.
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