in winegrower-core/src/main/java/org/apache/winegrower/lang/Substitutor.java [160:170]
private void appendWithSeparators(final StringBuilder builder, final Collection<String> iterable) {
if (iterable != null && !iterable.isEmpty()) {
final Iterator<?> it = iterable.iterator();
while (it.hasNext()) {
builder.append(it.next());
if (it.hasNext()) {
builder.append("->");
}
}
}
}