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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 union_update(self, other, ignore_conflicts=False):
 """Update the definition with the union of the ``other``."""

        if not ignore_conflicts:
            ensure_compatible(self, other)
        self._objects |= other._objects
        self._properties |= other._properties
        self._pairs |= other._pairs