kubeadm: update comment for ArgumentsFromCommand function in app/util/arguments

Signed-off-by: xin.li <[email protected]>

Author: my-git9

cmd/kubeadm/app/util/arguments.go

@@ -25,6 +25,7 @@ import (
 
 	"k8s.io/apimachinery/pkg/util/sets"
 	"k8s.io/klog/v2"
+
 	kubeadmapi "k8s.io/kubernetes/cmd/kubeadm/app/apis/kubeadm"
 )
 
@@ -65,7 +66,9 @@ func ArgumentsToCommand(base []kubeadmapi.Arg, overrides []kubeadmapi.Arg) []str
 	return command
 }
 
-// ArgumentsFromCommand parses a CLI command in the form "--foo=bar" to an Arg slice
+// ArgumentsFromCommand parses a CLI command in the form "--foo=bar" to an Arg slice.
+// This function's primary purpose is to parse the kubeadm-flags.env file, but can remain unused
+// for some releases.
 func ArgumentsFromCommand(command []string) []kubeadmapi.Arg {
 	args := []kubeadmapi.Arg{}
 	for i, arg := range command {