@Override
                public void transfer(Pipe pipe, Input input, Output output,
                        boolean repeated) throws IOException
                {
                    output.writeBool(number, input.readBool(), repeated);
                }
Field factory via sun.misc.Unsafe.

@author David Yu
@created Jul 7, 2011
protostuff-runtime/src/main/java/io/protostuff/runtime/RuntimeUnsafeFieldFactory.java