in log4j-changelog/src/main/java/org/apache/logging/log4j/changelog/releaser/ChangelogReleaser.java [114:123]
private static Set<String> releaseChangelogTemplateFileNames(final Path releaseDirectory) {
final String templateFileNameSuffix = '.' + ChangelogFiles.templateFileNameExtension();
return FileUtils.findAdjacentFiles(
releaseDirectory,
false,
paths -> paths
.map(path -> path.getFileName().toString())
.filter(path -> path.endsWith(templateFileNameSuffix))
.collect(Collectors.toSet()));
}