can anybody familiar with dependency plugin help me out?

[陈思淼]

Im trying to do my own dependence validator,I need to know how the
Maven dependency Tree Organized.I read the dependency:tree source code and I
don't know How This kind of code works,:

>   /**
>
     * The dependency tree builder to use.
>
     *
>
     * @component
>
     * @required
>
     * @readonly
>
     */
>
    private DependencyTreeBuilder dependencyTreeBuilder;


how can the DependencyTreeBuilder  inject to my own plugin,
can you help me out?
thank you very much!