docs: public static void writeInPemFormat(final Key key, final @NonNull File file) throws IOException
  	{
  		StringWriter stringWriter = new StringWriter();
  		JcaPEMWriter pemWriter = new JcaPEMWriter(stringWriter);
  		pemWriter.writeObject(key);
  		pemWriter.close();
  		String pemFormat = stringWriter.toString();
  		pemFormat = pemFormat.replaceAll("\\r\\n", "\\\n");
  		WriteFileExtensions.string2File(file, pemFormat);
  	}