AsyncCallback.ACLCallback, AsyncCallback.Children2Callback, AsyncCallback.ChildrenCallback, AsyncCallback.DataCallback, AsyncCallback.MultiCallback, AsyncCallback.StatCallback, AsyncCallback.StringCallback, AsyncCallback.VoidCallback
KeeperException.Code.OK. On failure, rc is set to the corresponding failure code in
KeeperException.Code.NODEEXISTS- The node on give path already exists for some API calls.
KeeperException.Code.NONODE- The node on given path doesn't exist for some API calls.
KeeperException.Code.NOCHILDRENFOREPHEMERALS- an ephemeral node cannot have children. There is discussion in community. It might be changed in the future.
rc- The return code or the result of the call.
path- The path that we passed to asynchronous calls.
ctx- Whatever context object that we passed to asynchronous calls.
name- The name of the Znode that was created. On success, name and path are usually equal, unless a sequential node has been created.
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