docstr: get the dict of mapping from keys to values of the InputFeatures
  
  Args:
      keep_none (:obj:`bool`, optional): whether to keep the predefined keys whose value is none. Defaults to False.
  
  Returns:
      :obj:`Dict[str, Any]`: dict of mapping from keys to values of the InputFeatures
docstr_tok: ["get","the","dict","of","mapping","from","keys","to","values","of","the","InputFeatures","Args",":","keep_none","(",":","obj",":","`","bool","`",",","optional",")",":","whether","to","keep","the","predefined","keys","whose","value","is","none",".","Defaults","to","False",".","Returns",":",":","obj",":","`","Dict","[","str",",","Any","]","`",":","dict","of","mapping","from","keys","to","values","of","the","InputFeatures"]
code: def to_dict(self, keep_none=False) -> Dict[str, Any]:
      """get the dict of mapping from keys to values of the InputFeatures
  
      Args:
          keep_none (:obj:`bool`, optional): whether to keep the predefined keys whose value is none. Defaults to False.
  
      Returns:
          :obj:`Dict[str, Any]`: dict of mapping from keys to values of the InputFeatures
      """
      data = {}
      for key in self.all_keys:
          value = getattr(self, key)
          if value is not None:
              data[key] = value
          elif value is None and keep_none:
              data[key] = None
      return data
  
imports: import copy
  import json
  import pickle
  from typing import *
  import paddle
label_desc: Use image node_id 12 for calling the InputFeatures obj's underlying member method code with example usage: obj.to_dict(keep_none) and returns: data