wsimport wasn't covered by lifecycle configuration

I was working on a project that requires me to use Maven to generate Java artifacts from WSDL. For the first time, I'm doing it with Maven. Somehow the Eclipse m2e seem doesn’t support wsimport lifecycle, my Maven configuration is as follows:

<plugin>
   <groupId>org.codehaus.mojo</groupId>
   <artifactId>jaxws-maven-plugin</artifactId>
   <executions>
      <execution>
            <goals>
               <goal>wsimport</goal>
            </goals>
            <configuration>
               <wsdlLocation>http://huahsin.org/wsasync</wsdlLocation>
               <wsdlDirectory>${basedir}/resources</wsdlDirectory>
               <keep>true</keep>
               <packageName>org.huahsin.ws</packageName>
               <sourceDestDir>${basedir}/src</sourceDestDir>    
            </configuration>
         </execution>
      </executions>
</plugin>

This is the original error message:

  Plugin execution not covered by lifecycle configuration: 
  org.codehaus.mojo:jaxws-maven-plugin:1.12:wsimport (execution: default, phase: generate-sources)

I though by adding the generate-sources phase into the configuration will help. But in fact, it wouldn’t.

   …
 
   <executions>
      <execution>
         <phase>generate-sources</phase>
            <goals>
   … 

Sigh~ asking myself why do I still want to scratch my head on a problem since m2e has already provided me the solution? With the POM file open in Eclipse, hover to that error, click on the Discover new m2e connectors to retrieve the jaxws-maven-plugin connector. This connector is specially designed to handle wsimport for me. Make me worry free.