cdm/src/main/java/ucar/nc2/util/cache/FileCache.java
public void showStats(Formatter format) {
    format.format("  hits= %d miss= %d nfiles= %d elems= %d%n", hits.get(), miss.get(), files.size(), cache.values().size());
  }
public void showStats(Formatter format) {
    format.format("  hits= %d miss= %d nfiles= %d elems= %d%n", hits.get(), miss.get(), files.size(), cache.values().size());
  }
Add stat report (hits, misses, etc) to formatter.

@param format add to this