message: Fix function description in auto_mixed_precision
diff: @@ -1377,10 +1377,10 @@ bool AutoMixedPrecisionImpl::IsSourceOrSinkOp(const string& op) const {
  }
  // Finds all clusters of float32 Tensor List nodes that are connected via their
  -// handle edges. Unsafe clusters (those with edges that cross untraversable
  -// boundaries via _Arg, _Ret, PartitionedCall etc. nodes) are added to black_set
  -// and not returned. The caller should paint all nodes in a cluster the same
  -// color, as they may all refer to the same Tensor List.
  +// handle edges. Unsafe clusters (those with unprocessable nodes, or with edges
  +// that cross untraversable boundaries via _Arg, _Ret, PartitionedCall etc.
  +// nodes) are added to black_set. The caller should paint all nodes in a cluster
  +// the same color, as they may all refer to the same Tensor List.
  void AutoMixedPrecisionImpl::FindFloat32TensorListOpClustersAndBlacklistUnsafe(
  std::vector<absl::flat_hash_set<const NodeDef*>>* tensor_list_clusters,
  absl::flat_hash_set<int>* black_set) const {
  