maven-dependency-plugin : MavenProject artifact.getFile() returns directory when dependency is part of aggregator pom build

maven-dependency-plugin : https://svn.apache.org/repos/asf/tuscany/maven-plugins/trunk/maven-dependency-plugin/

While building using an aggregator pom, if a dependency project is part of the aggregator, it is possible MavenProject artifact.getFile() to return a directory
Happens when the build lifecycle is stopped before it reaches the package or install phase

With artifacts from project.getArtifacts()
artifact = junit:junit:jar:4.8.1:test
artifact.getFile() = /Users/ndoraisamy/.m2/repository/junit/junit/4.8.1/junit-4.8.1.jar
artifact = com.company.application:utility:jar:1.0.0:compile
artifact.getFile() = /target/classes