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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 get_cameras_properties(self):
 """Return camera properties."""

        resource = "cameras"
        resource_event = self.publish_and_get_event(resource)
        if resource_event:
            self._last_refresh = int(time.time())
            self._camera_properties = resource_event.get('properties')