in aws-codepipeline-common/src/main/java/jetbrains/buildServer/codepipeline/CodePipelineUtil.java [17:23]
public static String printStrings(@NotNull Collection<String> strings) {
if (strings.isEmpty()) return StringUtil.EMPTY;
final StringBuilder sb = new StringBuilder();
for (String s : strings) sb.append(s).append("\n");
return sb.toString();
}