@Override
  public String toString() {
    final StringBuilder sb = new StringBuilder("ContainerPlacementResponseMessage{");
    sb.append(" UUID: ").append(uuid);
    sb.append(", Processor ID: ").append(processorId);
    sb.append(", deploymentId='").append(deploymentId).append('\'');
    sb.append(", destinationHost='").append(destinationHost).append('\'');
    sb.append(", requestExpiry=").append(requestExpiry);
    sb.append(", statusCode=").append(statusCode);
    sb.append(", timestamp=").append(timestamp);
    sb.append(", responseMessage='").append(responseMessage).append('\'');
    sb.append('}');
    return sb.toString();
  }
Creates a {@link ContainerPlacementResponseMessage} using {@link ContainerPlacementRequestMessage}
status of current request and response associated with status
samza-api/src/main/java/org/apache/samza/container/placement/ContainerPlacementResponseMessage.java