code: def do_zero(self, params):
          
          self.set(params.path, None, version=params.version)
docs: \x1b[1mNAME\x1b[0m
          zero - Set the znode's to None (no bytes)
  
  \x1b[1mSYNOPSIS\x1b[0m
          zero <path> [version]
  
  \x1b[1mOPTIONS\x1b[0m
          * version: only update if version matches (default: -1)
  
  \x1b[1mEXAMPLES\x1b[0m
          > zero /foo
          > zero /foo 3