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Type: Bug
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Resolution: Done
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Priority: Major - P3
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Affects Version/s: None
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Component/s: Aggregation Framework
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None
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ALL
All four of these $projections should do the same thing:
{'a.b': 1} // classic inclusion {a: {b: 1} // nested inclusion {'a.b': '$a.b'} // dotted FieldPathExpression {a: {b: '$a.b'} // nested FieldPathExpression