code: public String toHeader() {
  		StringBuilder header = new StringBuilder();
  		header.append(name).append('=').append(value);
  		if (domain != null) {
  			header.append("; ").append("Domain=").append(domain);
  		}
  		if (path != null) {
  			header.append("; ").append("Path=").append(path);
  		}
  		if (expireTime > -1) {
  			header.append("; ").append("Expires=").append(RFC_DATEFORMAT.format(new Date(expireTime)));
  		}
  		if (secure) {
  			header.append("; ").append("Secure");
  		}
  		return header.toString();
  	}
docs: Transforms this cookie into a Set-Cookie header field
  
  @return The header