↓ 16 callersMethodIsContainerTypecheck if a container type: vt is one of: Bytes, String, Nil, Slice or Map. if vt param == valueTypeNil, and nil is seen in stream, consume the nil.
Godeps/_workspace/src/github.com/ugorji/go/codec/decode.go:57
↓ 15 callersMethodrequest(opcode int32, req interface{}, res interface{}, recvFunc func(*request, *responseHeader, error))
Godeps/_workspace/src/github.com/samuel/go-zookeeper/zk/conn.go:666