[clang] Add retrieval of unary operator spelling and python bindings (PR #219983)

[Vlad Serebrennikov via cfe-commits]

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@@ -2474,6 +2484,36 @@ def is_assignment(self):
     Comma = 33
 
 
+class UnaryOperator(BaseEnumeration):
+    """A UnaryOperator describes an expression's of unary operator kind."""
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Endilll wrote:

> what do you think about using the same docstring as the C enum ("Describes the kind of unary operators.")?

SGTM

https://github.com/llvm/llvm-project/pull/219983