magnum cluster create does not tell positional argument completely

[NidhiMittalHada]

Thats help of magnum cluster create
=======================================
stack@kernel:~/devstack$ magnum help cluster-create
usage: magnum cluster-create [--keypair-id <keypair> | --keypair <keypair>]
                             [--name <name>] --cluster-template
                             <cluster_template> [--node-count <node-count>]
                             [--master-count <master-count>]
                             [--discovery-url <discovery-url>]
                             [--timeout <timeout>]
                             [<name>]

Create a cluster.

Positional arguments:
  <name> Name of the cluster to create.

Optional arguments:
  --keypair-id <keypair>
                        Name of the keypair to use for this cluster. This
                        parameter is deprecated and will be removed in a
                        future release. Use --keypair instead.
  --keypair <keypair> Name of the keypair to use for this cluster.
  --name <name> Name of the cluster to create. The --name parameter is
                        deprecated and will be removed in a future release.
                        Use the <name> positional parameter instead.
  --cluster-template <cluster_template>
                        ID or name of the cluster template.
  --node-count <node-count>
                        The cluster node count.
  --master-count <master-count>
                        The number of master nodes for the cluster.
  --discovery-url <discovery-url>
                        Specifies custom discovery url for node discovery.
  --timeout <timeout> The timeout for cluster creation in minutes. The
                        default is 60 minutes.

================================================================================

stack@kernel:~/devstack$ magnum cluster-create first_cluster
usage: magnum cluster-create [--keypair-id <keypair> | --keypair <keypair>]
                             [--name <name>] --cluster-template
                             <cluster_template> [--node-count <node-count>]
                             [--master-count <master-count>]
                             [--discovery-url <discovery-url>]
                             [--timeout <timeout>]
                             [<name>]
error: argument --cluster-template is required >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
Try 'magnum help cluster-create' for more information.

It seems magnum requires cluster-template as mandatory argument but help is misguiding.
Help doesn't tell so. Needs correction