public static EventProtos.VertexManagerEventProto convertVertexManagerEventToProto( VertexManagerEvent event) { EventProtos.VertexManagerEventProto.Builder vmBuilder = VertexManagerEventProto.newBuilder(); vmBuilder.setTargetVertexName(event.getTargetVertexName()); if (event.getUserPayload() != null) { vmBuilder.setUserPayload(ByteString.copyFrom(event.getUserPayload())); } return vmBuilder.build(); }