画布 1
maven
  lifecycle
    clean
    default
    site
    clean
    validate
    compile
    test
    package
    verify
    install
    deploy
    site
  plugin（插件在 maven 里都有相应的名称，如：org.apache.maven.plugins:maven-source-plugin:2.2）
    clean
      help
      clean
      goal
    compiler
      compile
      help
      testCompile
      goal
    deploy
      deploy
      deploy-file
      help
      goal
    install
      help
      install
      install-file
      goal
    jacoco
      check
      dump
      help
      instrument
      merge
      prepare-agent
      prepare-agent-integration
      report
      report-aggregate
      report-integration
      restore-instrumented-classes
      goal
    site
      attach-descriptor
      deploy
      effective-site
      help
      jar
      run
      site
      stage
      stage-delpoy
      goal
    source
      aggregate
      generated-test-jar
      help
      jar
      jar-no-fork
      test-jar
      test-jar-no-fork
      goal
    surefire
      help
      test
      goal
  dependencies
    项目自己的 dependencies
    maven 的 dependencies 插件
    dependency 分析插件