code: @Nullable
    public static String getRFC1421CompliantString (@Nullable final String sCertificate, final boolean bIncludePEMHeader)
    {
      return getRFC1421CompliantString (sCertificate, bIncludePEMHeader, CRLF);
    }
docs: The certificate string needs to be emitted in portions of 64 characters. If
  characters are left, than &lt;CR&gt;&lt;LF&gt; ("\r\n") must be added to
  the string so that the next characters start on a new line. After the last
  part, no &lt;CR&gt;&lt;LF&gt; is needed. Respective RFC parts are 1421
  4.3.2.2 and 4.3.2.4
  
  @param sCertificate
  Original certificate string as stored in the DB
  @param bIncludePEMHeader
  <code>true</code> to include {@link #BEGIN_CERTIFICATE} header and
  {@link #END_CERTIFICATE} footer.
  @return The RFC 1421 compliant string. May be <code>null</code> if the
  original string is <code>null</code> or empty.