crossoverJie commented on code in PR #22303:
URL: https://github.com/apache/pulsar/pull/22303#discussion_r1530653734


##########
pulsar-testclient/src/main/java/org/apache/pulsar/testclient/LoadSimulationClient.java:
##########
@@ -170,19 +170,19 @@ public void start() throws Exception {
         }
     }
 
-    // JCommander arguments for starting a LoadSimulationClient.
-    @Parameters(commandDescription = "Simulate client load by maintaining 
producers and consumers for topics.")
+    // picocli arguments for starting a LoadSimulationClient.
+    @Command(description = "Simulate client load by maintaining producers and 
consumers for topics.")

Review Comment:
   Done.



##########
pulsar-testclient/src/main/java/org/apache/pulsar/testclient/CmdGenerateDocumentation.java:
##########
@@ -18,46 +18,47 @@
  */
 package org.apache.pulsar.testclient;
 
-import com.beust.jcommander.JCommander;
-import com.beust.jcommander.Parameter;
-import com.beust.jcommander.ParameterDescription;
-import com.beust.jcommander.ParameterException;
-import com.beust.jcommander.Parameters;
 import java.lang.reflect.Constructor;
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.LinkedHashMap;
 import java.util.List;
 import java.util.Map;
 import lombok.extern.slf4j.Slf4j;
+import picocli.CommandLine;
+import picocli.CommandLine.Command;
+import picocli.CommandLine.Option;
+import picocli.CommandLine.ParameterException;
 
 @Slf4j
 public class CmdGenerateDocumentation {
 
-    @Parameters(commandDescription = "Generate documentation automatically.")
+    @Command(description = "Generate documentation automatically.")

Review Comment:
   Done.



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