docs: protected void handleProcessTimeout(String[] cmd) throws IOException {
          StringBuilder bld   = new StringBuilder();
          boolean       first = true;
          for (String c : cmd) {
              if (first) {
                  first = false;
              } else {
                  bld.append(" ");
              }
  
              String esc = Strings.escape(c);
  
              // Quote where escaping is needed, OR the argument
              // contains a literal space.
              if (!c.equals(esc) || c.contains(" ")) {
                  bld.append('\"')
                     .append(esc)
                     .append('\"');
              } else {
                  bld.append(c);
              }
          }
  
          throw new IOException("Process took too long: " + bld.toString());
      }