<assembly xmlns="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.2" 
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.2 http://maven.apache.org/xsd/assembly-1.1.2.xsd">
  <id>bin</id>
  <formats>
    <format>dir</format>
  </formats>
  <includeBaseDirectory>false</includeBaseDirectory>
  <dependencySets>
    <dependencySet>
      <includes>
        <include>test:child1</include>
      </includes>
      <outputDirectory>${artifact.properties.foo}</outputDirectory>
    </dependencySet>
  </dependencySets>
</assembly>