java/client/src/main/java/org/apache/rocketmq/client/java/message/GeneralMessageImpl.java [109:144]:
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    @Override
    public String getTopic() {
        return topic;
    }

    @Override
    public ByteBuffer getBody() {
        return ByteBuffer.wrap(body).asReadOnlyBuffer();
    }

    @Override
    public Map<String, String> getProperties() {
        return new HashMap<>(properties);
    }

    @Override
    public Optional<String> getTag() {
        return Optional.ofNullable(tag);
    }

    @Override
    public Collection<String> getKeys() {
        return new ArrayList<>(keys);
    }

    @Override
    public Optional<String> getMessageGroup() {
        return Optional.ofNullable(messageGroup);
    }

    @Override
    public Optional<Long> getDeliveryTimestamp() {
        return Optional.ofNullable(deliveryTimestamp);
    }

    @Override
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java/client/src/main/java/org/apache/rocketmq/client/java/message/MessageViewImpl.java [104:160]:
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    @Override
    public String getTopic() {
        return topic;
    }

    /**
     * @see MessageView#getBody()
     */
    @Override
    public ByteBuffer getBody() {
        return ByteBuffer.wrap(body).asReadOnlyBuffer();
    }

    /**
     * @see MessageView#getProperties()
     */
    @Override
    public Map<String, String> getProperties() {
        return new HashMap<>(properties);
    }

    /**
     * @see MessageView#getTag()
     */
    @Override
    public Optional<String> getTag() {
        return Optional.ofNullable(tag);
    }

    /**
     * @see MessageView#getKeys()
     */
    @Override
    public Collection<String> getKeys() {
        return new ArrayList<>(keys);
    }

    /**
     * @see MessageView#getMessageGroup()
     */
    @Override
    public Optional<String> getMessageGroup() {
        return Optional.ofNullable(messageGroup);
    }

    /**
     * @see MessageView#getDeliveryTimestamp()
     */
    @Override
    public Optional<Long> getDeliveryTimestamp() {
        return Optional.ofNullable(deliveryTimestamp);
    }

    /**
     * @see MessageView#getBornHost()
     */
    @Override
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