def METHOD_NAME(account_name: Optional[pulumi.Input[str]] = None,
                                    graph_name: Optional[pulumi.Input[str]] = None,
                                    resource_group_name: Optional[pulumi.Input[str]] = None,
                                    opts: Optional[pulumi.InvokeOptions] = None) -> pulumi.Output[GetGraphResourceGraphResult]:
    """
    Gets the Graph resource under an existing Azure Cosmos DB database account with the provided name.
    :param str account_name: Cosmos DB database account name.
    :param str graph_name: Cosmos DB graph resource name.
    :param str resource_group_name: The name of the resource group. The name is case insensitive.
    """
    ...