code: static Map<View, FormValidator.FieldInfo> getFieldsForTarget(Object target) {
  		Map<View, FormValidator.FieldInfo> infoMap = sCachedFieldsByTarget.get(target);
  
  		if (infoMap != null) {
  			for (View view : infoMap.keySet()) {
  				// view has been removed from the window - we will need to scan fields of target again
  				if (view.getWindowToken() == null) {
  					infoMap = null;
  
  					break;
  				}
  			}
  		}
  
  		if (infoMap == null) {
  			infoMap = findFieldsToValidate(target);
  			sCachedFieldsByTarget.put(target, infoMap);
  		}
  		return infoMap;
  	}
docs: get map of field information on view for given target