code: public boolean setLinesInserted(String linesInsertedStr) {
      try {
        this.linesInserted = Integer.parseInt(linesInsertedStr);
        return true;
      } catch (NumberFormatException e) {
        return false;
      }
    }
docs: Sets the number of lines inserted in a commit.
  
  @param linesInsertedStr
  The number of lines inserted in <code>String</code> format.
  @return True if the <code>linesInsertedStr</code> parameter is a <code>String</code>
  representing a number. False if the <code>String</code> does not contain a parsable
  integer.