@JsonUnwrapped duplicates property with @JsonSerialize or @JsonProperty

 
public static interface Feed {
	public String getTitle();
	public String getCategory();
}

public static class MyFeed implements Feed {
	public String getTitle() {
		return "my title";
	}

	public String getCategory() {
		return "my category";
	}

	public String getAdditionalProperty() {
		return "my new prop";
	}

}

public static class ProxyFeed implements Feed {
	@JsonUnwrapped
	@JsonSerialize or @JsonProperty
	private final Feed feed;

	public ProxyFeed(Feed feed) {
		this.feed = feed;
	}

	public String getTitle() {
		return "Proxy "+ feed.getTitle();
	}
	public String getCategory() {
		return "Proxy " + feed.getCategory();
	}
	
	public String getProxyProperty() {
		return "Proxy new prop";
	}
}

 
System.out.println(new ObjectMapper().writeValueAsString(new ProxyFeed(new MyFeed())));