def METHOD_NAME(channel_name: Optional[pulumi.Input[str]] = None,
                       resource_group_name: Optional[pulumi.Input[str]] = None,
                       resource_name: Optional[pulumi.Input[str]] = None,
                       opts: Optional[pulumi.InvokeOptions] = None) -> pulumi.Output[GetChannelResult]:
    """
    Returns a BotService Channel registration specified by the parameters.
    :param str channel_name: The name of the Bot resource.
    :param str resource_group_name: The name of the Bot resource group in the user subscription.
    :param str resource_name: The name of the Bot resource.
    """
    ...