private Class<? extends Test> determineCommandClass(String cmd) {
    CmdDescriptor descriptor = commands.get(cmd);
    return descriptor != null ? descriptor.getCmdClass() : null;
  }
Format passed integer.
@param number the integer to format
@return Returns zero-prefixed 10-byte wide decimal version of passed number (Does absolute in
        case number is negative).
hbase-rest/src/test/java/org/apache/hadoop/hbase/rest/PerformanceEvaluation.java