def METHOD_NAME(format: Optional[pulumi.Input[Optional[str]]] = None,
                      policy_id: Optional[pulumi.Input[str]] = None,
                      resource_group_name: Optional[pulumi.Input[str]] = None,
                      service_name: Optional[pulumi.Input[str]] = None,
                      opts: Optional[pulumi.InvokeOptions] = None) -> pulumi.Output[GetPolicyResult]:
    """
    Get the Global policy definition of the Api Management service.
    :param str format: Policy Export Format.
    :param str policy_id: The identifier of the Policy.
    :param str resource_group_name: The name of the resource group. The name is case insensitive.
    :param str service_name: The name of the API Management service.
    """
    ...