private static void completeVersions(@NotNull CompletionResultSet completionResultSet,
                                       @NotNull Project project,
                                       @Nullable String groupId,
                                       @Nullable String artifactId,
                                       @NotNull String prefix) {
    if (StringUtil.isEmptyOrSpaces(artifactId)) return;
    CompletionResultSet newResultSet = completionResultSet.withRelevanceSorter(CompletionService.getCompletionService().emptySorter().weigh(
      new LookupElementWeigher("mavenVersionWeigher") {
        @Nullable
        @Override
        public Comparable weigh(@NotNull LookupElement element) {
          return new NegatingComparable(new MavenVersionComparable(StringUtil.trimStart(element.getLookupString(), prefix)));
        }
      }));

    Set<String> versions;

    if (StringUtil.isEmptyOrSpaces(groupId)) {
      versions = Collections.emptySet();
      //if (!(coordinates instanceof MavenDomPlugin)) return;
      //
      //versions = indicesManager.getVersions(MavenArtifactUtil.DEFAULT_GROUPS[0], artifactId);
      //for (int i = 0; i < MavenArtifactUtil.DEFAULT_GROUPS.length; i++) {
      //  versions = Sets.union(versions, indicesManager.getVersions(MavenArtifactUtil.DEFAULT_GROUPS[i], artifactId));
      //}
    }
    else {
      versions = DependencySearchService.getInstance(project).getVersions(groupId, artifactId);
    }

    for (String version : versions) {
      newResultSet.addElement(LookupElementBuilder.create(prefix + version));
    }
    newResultSet.addElement(LookupElementBuilder.create(prefix + RepositoryLibraryDescription.ReleaseVersionId));
    newResultSet.addElement(LookupElementBuilder.create(prefix + RepositoryLibraryDescription.LatestVersionId));
  }
private static void completeVersions(@NotNull CompletionResultSet completionResultSet,
                                       @NotNull Project project,
                                       @Nullable String groupId,
                                       @Nullable String artifactId,
                                       @NotNull String prefix)