call site 7 for path.local.read
apigen/testing/test_apigen_example.py - line 170
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   def test_build_function_pages(self):
       self.apb.build_function_pages(['main.sub.func'])
       funcfile = self.base.join('api/main.sub.func.html')
       assert funcfile.check()
->     html = funcfile.read()
       _checkhtml(html)