* @see Taverna.Visitor.DataFlowImplVisitor#visit(Taverna.Tree.Processor.Processors)
*/
public Object visit(Processors procs){
List<GraphObject> objs = new ArrayList<GraphObject>();
for(Processor p : procs.getProcessors()){
GraphObject gr = (GraphObject) visit(p);
if(gr != null) objs.add(gr);
}
return objs;
}