public static void write(String data, OutputStream output, Charset encoding) throws IOException {
        if (data != null) {
            output.write(data.getBytes(Charsets.toCharset(encoding)));
        }
    }
Writes chars from a <code>String</code> to bytes on an
<code>OutputStream</code> using the specified character encoding.
<p>
This method uses {@link String#getBytes(String)}.

@param data     the <code>String</code> to write, null ignored
@param output   the <code>OutputStream</code> to write to
@param encoding the encoding to use, null means platform default
@throws NullPointerException if output is null
@throws IOException          if an I/O error occurs
@since 2.3
pay-java-common/src/main/java/com/egzosn/pay/common/util/IOUtils.java