src/java/org/apache/cassandra/db/Column.java
//to be safe, any operation looking at previousVersions needs to synchronize on this column (in case previousVersions is null)
to be safe, any operation looking at previousVersions needs to synchronize on this column (in case previousVersions is null)
to be safe any operation looking at previousVersions needs to synchronize on this column ( in case previousVersions is null )
@Override
    public NavigableSet<IColumn> previousVersions()
    {
        return previousVersions;
    }
@ Override public NavigableSet < IColumn > previousVersions ( ) { return previousVersions ; }
to be safe, any operation looking at previousVersions needs to synchronize on this column (in case previousVersions is null)
to be safe any operation looking at previousVersions needs to synchronize on this column ( in case previousVersions is null )