def METHOD_NAME(arn: Optional[pulumi.Input[str]] = None,
                   id: Optional[pulumi.Input[Optional[str]]] = None,
                   opts: Optional[pulumi.InvokeOptions] = None) -> pulumi.Output[GetArnResult]:
    """
    Parses an ARN into its constituent parts.
    ## Example Usage
    ```python
    import pulumi
    import pulumi_aws as aws
    db_instance = aws.get_arn(arn="arn:aws:rds:eu-west-1:123456789012:db:mysql-db")
    ```
    :param str arn: ARN to parse.
    """
    ...