code: package de.itemis.itemisapp;
  
  import java.io.Reader;
  import java.util.ArrayList;
  import java.util.List;
  
  import org.simpleframework.xml.Element;
  import org.simpleframework.xml.ElementList;
  import org.simpleframework.xml.Root;
  import org.simpleframework.xml.Serializer;
  import org.simpleframework.xml.core.Persister;
  
  import de.itemis.base.GenericItemContentProvider;
  
  public class OfficeByIdProvider extends GenericItemContentProvider<Office> {
  
  	private static final long serialVersionUID = 1L;
  
  	public OfficeByIdProvider(String feedUrl) {
  		super(feedUrl);
  	}
  
  	@Root(strict = false)
  	public static class Offices {
  
  		@Element(required = false, name = "office")
  		private Office office;
  
  		public Office getOffice() {
  			return office;
  		}
  
  	}
  
  	protected Office extractItem(Reader reader) throws Exception {
  		Serializer serializer = new Persister();
  		Offices root = serializer.read(Offices.class, reader);
  		return root.getOffice();
  	}
  
  }
  