PackageDescriptor 1704 third_party/protobuf/java/src/main/java/com/google/protobuf/Descriptors.java         (descriptor instanceof PackageDescriptor) || 
PackageDescriptor 1866 third_party/protobuf/java/src/main/java/com/google/protobuf/Descriptors.java           new PackageDescriptor(name, fullName, file));
PackageDescriptor 1869 third_party/protobuf/java/src/main/java/com/google/protobuf/Descriptors.java         if (!(old instanceof PackageDescriptor)) {