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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _check_if_all_updated(self):
 """Check if all parameters from the TOC has at least been fetched once"""

        for g in self.toc.toc:
            if g not in self.values:
                return False
            for n in self.toc.toc[g]:
                if n not in self.values[g]:
                    return False

        return True