code: private String getInitParameter(String name, String defaultValue) {
  
          String value = getInitParameter(name);
          if (value != null) {
              return value;
          }
  
          return defaultValue;
      }
docs: This method returns the parameter's value if it exists, or defaultValue if not.
  
  @param name The parameter's name
  @param defaultValue The default value to return if the parameter does not exist
  @return The parameter's value or the default value if the parameter does not exist