code: public static void readFileLines (@Nullable final File aFile,
                                      @Nonnull final Charset aCharset,
                                      @Nonnull final Consumer <? super String> aConsumer)
    {
      if (aFile != null)
        StreamHelper.readStreamLines (FileHelper.getInputStream (aFile), aCharset, aConsumer);
    }
docs: Get the content of the passed file as a list of lines, whereas each line
  does not contain a separator.
  
  @param aFile
  The file to read. May be <code>null</code>.
  @param aCharset
  The character set to use. May not be <code>null</code>.
  @param aConsumer
  The consumer to be invoked for each line. May not be
  <code>null</code>.