void (@NotNull HierarchicalMethodSignatureImpl existing, @NotNull HierarchicalMethodSignature superSignature) { for (HierarchicalMethodSignature existingSuper : existing.getSuperSignatures()) { if (existingSuper.getMethod() == superSignature.getMethod()) { for (HierarchicalMethodSignature signature : superSignature.getSuperSignatures()) { mergeSupers((HierarchicalMethodSignatureImpl)existingSuper, signature); } return; } } if (existing.getMethod() == superSignature.getMethod()) { List<HierarchicalMethodSignature> existingSupers = existing.getSuperSignatures(); for (HierarchicalMethodSignature supers : superSignature.getSuperSignatures()) { if (!existingSupers.contains(supers)) existing.addSuperSignature(copy(supers)); } } else { HierarchicalMethodSignatureImpl copy = copy(superSignature); existing.addSuperSignature(copy); } }