implement StringWriter.getBuffer
implement StringWriter.getBuffer

This is used by json.org's JSON library.

MaartenR/avian,dicej/avian,bgould/avian,ucdseniordesign/avian,marcinolawski/avian,bgould/avian,minor-jason/avian,ucdseniordesign/avian,minor-jason/avian,marcinolawski/avian,bgould/avian,lwahlmeier/avian,dicej/avian,bigfatbrowncat/avian-pack.avian,MaartenR/avian,lwahlmeier/avian,lostdj/avian,dicej/avian,bigfatbrowncat/avian-pack.avian,bigfatbrowncat/avian-pack.avian,ucdseniordesign/avian,MaartenR/avian,dicej/avian,minor-jason/avian,lostdj/avian,lostdj/avian,joshuawarner32/avian,marcinolawski/avian,lwahlmeier/avian,ucdseniordesign/avian,lostdj/avian,bigfatbrowncat/avian-pack.avian,joshuawarner32/avian,MaartenR/avian,minor-jason/avian,lwahlmeier/avian,marcinolawski/avian,bgould/avian,joshuawarner32/avian,joshuawarner32/avian