cdm/src/main/java/thredds/inventory/filter/CompositeMFileFilter.java
private boolean andFilter(MFile mfile) {
    if (andFilters == null) return true;
    for (MFileFilter filter : andFilters) {
      if (!filter.accept(mfile))
        return false;
    }
    return true;
  }
private boolean andFilter(MFile mfile) {
    if (andFilters == null) return true;
    for (MFileFilter filter : andFilters) {
      if (!filter.accept(mfile))
        return false;
    }
    return true;
  }
all AND filters must be satisfied