def operator_exists(self, operator_uri):
        """Checks if the operator exists.

        Args:
            operator_uri: the URI of the operator

        Returns:
            True/False
        """
        for operator in self.list_operators():
            if operator_uri == operator.uri:
                return True

        return False
Checks if the operator exists.

        Args:
            operator_uri: the URI of the operator

        Returns:
            True/False
        
fiftyone/operators/registry.py