code: public void add(final String name, final String value) throws StorageException {
          if (Utility.isNullOrEmpty(name)) {
              throw new IllegalArgumentException(SR.QUERY_PARAMETER_NULL_OR_EMPTY);
          }
  
          this.insertKeyValue(name, value);
      }
docs: Adds a value to the URI with escaping.
  
  @param name
  the query key name.
  @param value
  the query value.
  @throws StorageException