Create PopNode implementing UpdateLeafNode. Ensure we can parse $pop to a PopNode.
- depends on
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SERVER-28621 Parse BSON update expression into an UpdateNode tree
- Closed
- is depended on by
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SERVER-28777 Always parse update expression as an UpdateNode tree when featureCompatibilityVersion=3.6
- Closed
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SERVER-29912 $pop update modifier should validate that its argument is either 1 or -1
- Closed