private void printNull() throws IOException {
        out.write(0x6E); // n
        out.write(0x75); // u
        out.write(0x6C); // l
        out.write(0x6C); // l
    }
An internal class that can serialize java objects into JSON code.

@author Emil Forslund
@since  1.0.0
common-parent/json/src/main/java/com/speedment/common/json/internal/JsonSerializer.java