def METHOD_NAME(certificate_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[GetCertificateResult]:
    """
    Returns the certificate.
    :param str certificate_name: The name of the certificate
    :param str resource_group_name: The name of the resource group that contains the IoT hub.
    :param str resource_name: The name of the IoT hub.
    """
    ...