private static String getExceptionMessage(Throwable ex) {
    String result = ex.getMessage();
    if (result == null || result.length() == 0) {
      result = ex.toString();
    }
    return result;
  }
Represents a list of ResourceInst that have been combined together. Note the most common case
is for this class to only own a single ResourceInst.
geode-core/src/main/java/org/apache/geode/internal/SystemAdmin.java