code: @Nonnull
    public static String getWithLeading (final int nValue, @Nonnegative final int nMinLen, final char cFront)
    {
      return _getWithLeadingOrTrailing (Integer.toString (nValue), nMinLen, cFront, true);
    }
docs: Get a string that is filled at the beginning with the passed character until
  the minimum length is reached. If the input String is longer than the
  provided length, it is returned unchanged.
  
  @param nValue
  Source string. May be <code>null</code>.
  @param nMinLen
  Minimum length. Should be &gt; 0.
  @param cFront
  The character to be used at the beginning
  @return A non-<code>null</code> string that has at least nLen chars
  @see #getWithLeading(String, int, char)