use Set instead of Map since the Map value is unused

git-svn-id: https://svn.apache.org/repos/asf/maven/shared/trunk@1595985 13f79535-47bb-0310-9956-ffa450edef68
2 files changed
tree: d9945966755697876d38b7bce298b3fbb5206fff
  1. src/
  2. pom.xml