Set<String> duplicateArtifactIds = projectBuildList.keySet().stream()
                .map(MavenProject::getArtifactId)
                .collect(Collectors.groupingBy(Function.identity(), Collectors.counting()))
                .entrySet()
                .stream()
                .filter(p -> p.getValue() > 1)
                .map(Map.Entry::getKey)

Detail Each summary entry contains the first sentence from the detailed description for that item. The summary entries are alphabetical, while the detailed descriptions are in the order they appear in the source code. This preserves the logical groupings established by the programmer. Annotation Type Each annotation type has its own separate page with the following sections: Annotation Type declaration Annotation Type description Required Element Summary Optional Element Summary Element Detail Enum...