code: @Override
  	public boolean exists() {
  		// Return false if any of the resources in this aggregated resource
  		// does not exist
  		boolean result = true;
  		for (IResource resource : resources) {
  			if (!resource.exists()) {
  				result = false;
  				break;
  			}
  		}
  		return result;
  	}
docs: /* (non-Javadoc)
  @see com.ibm.jaggr.core.resource.IResource#exists()