GetInfo get the general information of a Argo workflow, such as name, namespace, service account and so on.

GetTreeExit return the tree of a on-exit node in workflow, and it consist of step, podname, duration and message.

GetTreeNode return the tree of a node in workflow, consist of step, podname, duration and message.

GetTreeRoot return the tree of a root node in workflow, and it consist of step, podname, duration and message.