public Builder baseUnit(String unit) {
      builder.baseUnit(unit);
      return this;
    }
Prepares to associate the eventual {@code LegacyStatCounter} with the specified {@code
long} stat. The given {@code Statistics} and {@code statId} must identify a {@code long}
stat.
geode-core/src/main/java/org/apache/geode/internal/statistics/meters/LegacyStatCounter.java