netudima commented on code in PR #2497:
URL: https://github.com/apache/cassandra/pull/2497#discussion_r2100560890


##########
src/java/org/apache/cassandra/tools/nodetool/UpdateCIDRGroup.java:
##########
@@ -20,26 +20,34 @@
 import java.util.ArrayList;
 import java.util.List;
 
-import io.airlift.airline.Arguments;
-import io.airlift.airline.Command;
 import org.apache.cassandra.auth.AuthKeyspace;
 import org.apache.cassandra.tools.NodeProbe;
-import org.apache.cassandra.tools.NodeTool.NodeToolCmd;
+import org.apache.cassandra.tools.nodetool.layout.CassandraUsage;
+import picocli.CommandLine.Command;
+import picocli.CommandLine.Parameters;
 
 import static com.google.common.base.Preconditions.checkArgument;
+import static org.apache.cassandra.tools.nodetool.CommandUtils.concatArgs;
 
 /**
  * Nodetool command to insert/update a CIDR group and associated mapping in 
the table {@link AuthKeyspace#CIDR_GROUPS}
  */
 @Command(name = "updatecidrgroup", description = "Insert/Update a cidr group")
-public class UpdateCIDRGroup extends NodeToolCmd
+public class UpdateCIDRGroup extends AbstractCommand
 {
-    @Arguments(usage = "[<cidrGroup> <cidr> ...]", description = "Requires a 
cidr group name, followed by one or more CIDRs separated by space")
-    private List<String> args = new ArrayList<>();
+    @CassandraUsage(usage = "[<cidrGroup> <cidr> ...]", description = 
"Requires a cidr group name, followed by one or more CIDRs separated by space")
+    public List<String> args = new ArrayList<>();
+
+    @Parameters(index = "0", description = "Name of the CIDR group", arity = 
"0..1")

Review Comment:
   should it be mandatory?



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