86   Status Get(const ReadOptions& options, ColumnFamilyHandle* column_family,
89   Status GetImpl(const ReadOptions& options, ColumnFamilyHandle* column_family,
94                         ColumnFamilyHandle* column_family) override;
102                       const std::vector<ColumnFamilyHandle*>& column_families,
107              ColumnFamilyHandle* /*column_family*/, const Slice& /*key*/,  in Put()  argument
114                ColumnFamilyHandle* /*column_family*/, const Slice& /*key*/,  in Merge()  argument
121                 ColumnFamilyHandle* /*column_family*/,  in Delete()  argument
128                       ColumnFamilyHandle* /*column_family*/,  in SingleDelete()  argument
140                       ColumnFamilyHandle* /*column_family*/,  in CompactRange()  argument
148       ColumnFamilyHandle* /*column_family*/,
172                ColumnFamilyHandle* /*column_family*/) override {  in Flush()  argument
186       ColumnFamilyHandle* /*cfd*/,  in SetOptions()  argument
201       ColumnFamilyHandle* /*column_family*/,  in IngestExternalFile()  argument