message: added simple docs to FacetCounts now-public API
diff: @@ -398,6 +398,8 @@ impl<'a> Iterator for FacetChildIterator<'a> {
  }
  impl FacetCounts {
  + /// Returns an iterator over all of the facet count pairs inside this result.
  + /// See the documentation for `FacetCollector` for a usage example.
  pub fn get<T>(&self, facet_from: T) -> FacetChildIterator<'_>
  where
  Facet: From<T>,
  @@ -417,6 +419,8 @@ impl FacetCounts {
  FacetChildIterator { underlying }
  }
  + /// Returns a vector of top `k` facets with their counts, sorted highest-to-lowest by counts.
  + /// See the documentation for `FacetCollector` for a usage example.
  pub fn top_k<T>(&self, facet: T, k: usize) -> Vec<(&Facet, u64)>
  where
  Facet: From<T>,
  