public void setMessageContent(byte[] content) { computeContentLength(content);  messageContentBytes = content; messageContent = null; messageContentObject = null;
public void setMessageContent(String type, String subType, String messageContent) { if (messageContent == null) throw new IllegalArgumentException("messgeContent is null"); ContentType ct = new ContentType(type, subType); this.setHeader(ct); this.messageContent = messageContent; this.messageContentBytes = null; this.messageContentObject = null;   computeContentLength(messageContent);
	public void setMessageContent(byte[] content) {		computeContentLength(content);		messageContentBytes = content;		messageContent = null;		messageContentObject = null;	}