* @param yaml
* stream of YAML documents
* @return parsed root Nodes for all the specified YAML documents
*/
public Iterable<Node> composeAll(Reader yaml) {
final Composer composer = new Composer(new ParserImpl(new StreamReader(yaml)), resolver);
constructor.setComposer(composer);
Iterator<Node> result = new Iterator<Node>() {
public boolean hasNext() {
return composer.checkNode();
}