Example of locking in the Tree API

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To understand this better, let's look at an example:   Imagine you have a hierarchy like this and we want to move c/ to be underneath b/:         /       --|--      /     \      a     c      |     |      b     e      |      d   The end result would be something like this:           /         |                  a             |             b           --|--      /     \      d     c            |            e     To make this move, locks would have been acquired on: /a/b - because it's the parent underneath which the data will be put /c and /c/e - because they're the nodes that are being moved /a/b/c and /a/b/c/e - because that's new target location for the nodes being moved