public Builder mergeFrom(com.google.protobuf.Timestamp other) {
   if (other == com.google.protobuf.Timestamp.getDefaultInstance()) return this;
   if (other.getSeconds() != 0L) {
     setSeconds(other.getSeconds());
   }
   if (other.getNanos() != 0) {
     setNanos(other.getNanos());
   }
   onChanged();
   return this;
 }
 public com.google.protobuf.Timestamp getDefaultInstanceForType() {
   return com.google.protobuf.Timestamp.getDefaultInstance();
 }