Add graph for PyMethodObject.

_drafts/python-object-replacement.md

@@ -1,6 +1,6 @@
 ---
 layout: post
-title: Replacing Objects in Python
+title: Finding and Replacing Objects in Python
 tags: Python
 description: More reflection than you cared to ask for
 draft: true
@@ -735,7 +735,9 @@ person would give up here, but we still have a few tricks up our sleeve. Let's
 examine the internal C structure of bound methods,
 [`PyMethodObject`](https://github.com/python/cpython/blob/2.7/Include/classobject.h#L31).
 
-[...]
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+
+[`_PyObject_HEAD_EXTRA`](https://github.com/python/cpython/blob/2.7/Include/object.h#L64)
 
 [`PyCFunctionObject`](https://github.com/python/cpython/blob/2.7/Include/methodobject.h#L81)