public static void append(File file, Writer writer) throws IOException {
        append(file, writer, false);
    }
public static void append ( File file , Writer writer ) throws IOException { append ( file , writer , false ) ; }
Append the text supplied by the Writer at the end of the File without writing a BOM.

@param file   a File
@param writer the Writer supplying the text to append at the end of the File
@throws IOException if an IOException occurs.
@since 2.3