code: static public Accessor[] getAccessors(Class<?> type, FieldFilter filter) {
  		Class<?> nextClass = type;
  		HashMap<String, Accessor> map = new HashMap<String, Accessor>();
  		if (filter == null)
  			filter = BasicFiledFilter.SINGLETON;
  		while (nextClass != Object.class) {
  			Field[] declaredFields = nextClass.getDeclaredFields();
  
  			for (Field field : declaredFields) {
  				String fn = field.getName();
  				if (map.containsKey(fn))
  					continue;
  				Accessor acc = new Accessor(nextClass, field, filter);
  				if (!acc.isUsable())
  					continue;
  				map.put(fn, acc);
  			}
  			nextClass = nextClass.getSuperclass();
  		}
  		return map.values().toArray(new Accessor[map.size()]);
  	}
docs: Extract all Accessor for the field of the given class.
  
  @param type
  @return all Accessor available