String getColumnSeparator() {
    return columnSeparator != null ? columnSeparator : table.getColumnSeparator();
  }
A group of rows. Widths for all columns within a group will be the same and when built will
automatically be set to the length of the longest value in the column.

@since GemFire 7.0
geode-gfsh/src/main/java/org/apache/geode/management/internal/cli/result/RowGroup.java