class_docstr: OrderedDict of name to Feature
code: def __new__(cls):
      if cls.instance is None:
          cls.instance = super(Features, cls).__new__(cls)
          super(Features, cls.instance).__init__(
              [(f.name, f) for f in feature_list()]
          )
      return cls.instance
  
file_path: mxnet/python/mxnet/runtime.py
imports: import ctypes
  import collections
  from .base import _LIB, check_call
label_desc: Use image node_id 1 for calling the Features obj's underlying member method code with example usage: obj.__new__(cls) and returns: cls