def get_context_data(self, **kwargs):
        context = super(UpdateView, self).get_context_data(**kwargs)
        context['form_title'] = "Update {0}".format(
            self.form_class.Meta.model.__name__
        )

        # extra_context takes precedence over original values in context
        if self.extra_context:
            context = dict(context.items() + self.extra_context.items())
        return context
Tests the data streams properties.
dataset/ETHPy150Open mozilla/inventory/base/views.py/BaseUpdateView.get_context_data--crossover with--dataset/ETHPy150Open log2timeline/dfvfs/tests/vfs/ntfs_file_entry.py/NTFSFileEntryTest.testDataStream