in src/main/java/org/apache/sling/javax/activation/internal/OsgiMailcapCommandMap.java [59:68]
public synchronized void addMailcap(String mailcap) {
if (caller == null) {
caller = new Caller();
}
Bundle bundle = caller.get();
if (bundle != null) {
db.computeIfAbsent(bundle, x -> new MailcapFile())
.appendToMailcap(mailcap);
}
}