Can not generate javadoc api

Hi, I found that javadoc api link in xwiki website was out of date (http://build.xpertnet.biz/doc/api/) and without any version indication. I used subversion to check out the latest xwiki but failed in generating javadoc api, the errors were list below(BTW: I use netbeans as my IDE with Maven plugin): -------------------------------------------------------------------------------- [INFO]Scanning for projects... [WARN]Unable to get resource from repository xwiki (http://maven.xwiki.org) [INFO]------------------------------------------------------------------------ [ERROR]FATAL ERROR [INFO]------------------------------------------------------------------------ [INFO]Failed to resolve artifact. GroupId: com.xpn.xwiki ArtifactId: xwiki Version: 1-SNAPSHOT Reason: Unable to download the artifact from any repository [INFO] [INFO] com.xpn.xwiki:xwiki:pom:1-SNAPSHOT ...... [INFO]Trace org.apache.maven.reactor.MavenExecutionException: Cannot find parent: com.xpn.xwiki:xwiki for project: null:xwiki-root:pom:1.1-SNAPSHOT at org.apache.maven.DefaultMaven.getProjects(DefaultMaven.java:441) at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:349) at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:182) at org.apache.maven.embedder.MavenEmbedder.execute(MavenEmbedder.java:760) at org.codehaus.mevenide.netbeans.execute.MavenJavaExecutor.run(MavenJavaExecutor.java:257) at org.netbeans.core.execution.RunClassThread.run(RunClassThread.java:131) Caused by: org.apache.maven.project.ProjectBuildingException: Cannot find parent: com.xpn.xwiki:xwiki for project: null:xwiki-root:pom:1.1-SNAPSHOT ---------------------------------------------------------------------------------------------------------- Anyone can help? Thanks in advance. -- Best regards, Xin