No. This is a maven plugin to generate Eclipse files for a maven project. This is not an Eclipse Plugin for Maven.
You may also need to import the project created by Maven Eclipse Plugin. More information can be found here.
Before you can setup any maven project to your Eclipse IDE, you need to define first the location of your local repository to Eclipse. This is done by using: eclipse:add-maven-repo
As of version 2.4, there is a new flag, downloadJavadocs that behaves exactly like downloadSources except for javadocs. See more information here: Attach Library Sources.