Update README.md

rly · Nov 12, 2024 · 34bff4b · 34bff4b
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diff --git a/README.md b/README.md
@@ -121,6 +121,7 @@ classDiagram
         timestamp : TimestampVectorData
         duration : DurationVectorData, optional
         meanings_tables : list[MeaningsTable]
+        [additional_columns] : list[VectorData], optional
     }
 
     class NdxEventsNWBFile {