Eclipse Maven, codegen @DataObject(generateConverter=true) doesn't work

Hi, thank you for seeing this little problem!
environment: Eclipse neon, Maven, jdk8
I'm using Vertx 3.5.1 and I already done the work below:
1.add plugin CodeGenProcessor in the file pom.xml

maven-compiler-plugin
3.1

1.8
1.8
UTF8
false



default-compile


io.vertx.codegen.CodeGenProcessor


-AoutputDirectory=${basedir}/src/main/java





2.add vertx-codegen jar in the file pom.xml

io.vertx
vertx-codegen
3.5.1
processor
provided

3.add @DataObject(generateConverter=true) to the entity class:
@DataObject(generateConverter=true)
public class SysLog{
……
}
4.add package-info.java file at the entity's path
@ModuleGen(name = "entity", groupPackage="com.vertx.entity")
package com.vertx.entity;
import io.vertx.codegen.annotations.ModuleGen;
but still not entity converter no matter how many times I edit the entity file or compiled the whole project.
Please check this problem.