code: public java.sql.Timestamp getTimestampAsSqlTimestamp(String columnName) {
          final int colIndex = getColumnIndex(columnName);
          return getTimestampAsSqlTimestamp(colIndex);
      }
docs: Retrieve the <tt>java.sql.Timestamp</tt> equivalent to the value stored in the column specified by name.
  Note that VoltDB uses GMT universally within its process space. Date objects sent over
  the wire from clients may seem to be different times because of this, but it is just
  a time zone offset. VoltDB Timestamps are stored as long integer microseconds from epoch.
  The resulting value is accurate to no finer than microsecond granularity.
  Avoid retrieving via this method as it is slower than specifying the
  column by index. Use {@link #getTimestampAsSqlTimestamp(int)} instead.
  @param columnName name of the column
  @return the <tt>java.sql.Timestamp</tt> equivalent to the value stored in the specified column