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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 endpoint_from_production_variants(self, name, production_variants, tags=None, kms_key=None, wait=True):
 """Create an SageMaker ``Endpoint`` from a list of production variants. Args: name (str):
 The name of the ``Endpoint`` to create. production_variants (list[dict[str, str]]):
 The list of production variants to deploy. tags (list[dict[str, str]]):
 A list of key-value pairs for tagging the endpoint (default: None). kms_key (str):
 The KMS key that is used to encrypt the data on the storage volume attached to the instance hosting the endpoint. wait (bool):
 Whether to wait for the endpoint deployment to complete before returning (default: True). Returns: str: The name of the created ``Endpoint``. """


        if not _deployment_entity_exists(
                lambda: self.sagemaker_client.describe_endpoint_config(EndpointConfigName=name)):
            config_options = {'EndpointConfigName': name, 'ProductionVariants': production_variants}
            if tags:
                config_options['Tags'] = tags
            if kms_key:
                config_options['KmsKeyId'] = kms_key

            self.sagemaker_client.create_endpoint_config(**config_options)
        return self.create_endpoint(endpoint_name=name, config_name=name, tags=tags, wait=wait)