/**
* Returns an XML <tt>String</tt> representation of this <tt>IQ</tt>.
*
* @return an XML <tt>String</tt> representation of this <tt>IQ</tt>
*/
@Override
public String getChildElementXML() {
StringBuilder xml = new StringBuilder();
xml.append('<').append(ELEMENT_NAME);
xml.append(" xmlns='").append(NAMESPACE).append('\'');
String id = getID();
if (id != null) xml.append(' ').append(ID_ATTR_NAME).append("='").append(id).append('\'');
List<Content> contents = getContents();
if (contents.size() == 0) {
xml.append(" />");
} else {
xml.append('>');
for (Content content : contents) content.toXML(xml);
xml.append("</").append(ELEMENT_NAME).append('>');
}
return xml.toString();
}
/**
* Returns a <tt>Content</tt> from the list of <tt>Content</tt>s of this <tt>conference</tt> IQ
* which has a specific name. If no such <tt>Content</tt> exists, returns <tt>null</tt>.
*
* @param contentName the name of the <tt>Content</tt> to be returned
* @return a <tt>Content</tt> from the list of <tt>Content</tt>s of this <tt>conference</tt> IQ
* which has the specified <tt>contentName</tt> if such a <tt>Content</tt> exists; otherwise,
* <tt>null</tt>
*/
public Content getContent(String contentName) {
for (Content content : getContents()) if (contentName.equals(content.getName())) return content;
return null;
}