[clang] [libclang/python] Add typing annotations for the Cursor class (PR #138103)

[Jannick Kremer via cfe-commits]

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@@ -1552,68 +1553,85 @@ class Cursor(Structure):
 
     _fields_ = [("_kind_id", c_int), ("xdata", c_int), ("data", c_void_p * 3)]
 
+    _tu: TranslationUnit
+
+    # This ensures that no operations are possible on null cursors
+    # by guarding all method calls with a not-null assert
+    def __getattribute__(self, key: str) -> object:
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DeinAlptraum wrote:

Okay, added comments on `__eq__`, `__ne__` and `is_null` 

https://github.com/llvm/llvm-project/pull/138103