docs: protected boolean isValidFilePath(String filePath) {
  
          if (filePath == null)
              return false;
          int len = filePath.length();
          for (int i = 0; i < len; i++) {
              if (filePath.charAt(i) < ' ') {
                  if (com.ibm.ejs.ras.TraceComponent.isAnyTracingEnabled() && logger.isLoggable(Level.FINE))
                      logger.logp(Level.FINE, CLASS_NAME, "isValidFilePath", " invalid char in filePath --> [" + filePath + "]");
  
                  return false;
              }
          }
  
          return true;
  
      }