def METHOD_NAME(sink_identifier: Optional[pulumi.Input[str]] = None,
                    tags: Optional[pulumi.Input[Optional[Mapping[str, str]]]] = None,
                    opts: Optional[pulumi.InvokeOptions] = None) -> pulumi.Output[GetSinkResult]:
    """
    Data source for managing an AWS CloudWatch Observability Access Manager Sink.
    ## Example Usage
    ### Basic Usage
    ```python
    import pulumi
    import pulumi_aws as aws
    example = aws.oam.get_sink(sink_identifier="arn:aws:oam:us-west-1:111111111111:sink/abcd1234-a123-456a-a12b-a123b456c789")
    ```
    :param str sink_identifier: ARN of the sink.
    :param Mapping[str, str] tags: Tags assigned to the sink.
    """
    ...