class_docstr: Base Chinese Sample class to hold the necessary info and provide atomic operations
class_docstr_tok: ["Base","Chinese","Sample","class","to","hold","the","necessary","info","and","provide","atomic","operations"]
docstr: Insert items of multi given scope before index of field value.
  
  :param str field: field name
  :param int index: indicate which index to insert items
  :param str|list items: items to insert
  :return: Modified Sample
docstr_tok: ["Insert","items","of","multi","given","scope","before","index","of","field","value",".",":","param","str","field",":","field","name",":","param","int","index",":","indicate","which","index","to","insert","items",":","param","str|list","items",":","items","to","insert",":","return",":","Modified","Sample"]
code: def insert_field_before_index(self, field, index, items):
      r"""
      Insert items of multi given scope before index of field value.
  
      :param str field: field name
      :param int index: indicate which index to insert items
      :param str|list items: items to insert
      :return: Modified Sample
  
      """
      return self.insert_field_before_indices(field, [index], [items])
  
imports: import copy
  from abc import ABC, abstractmethod
  from textflint.input.component.field.list_field import ListField
  from ..field import CnTextField
  from ....common.settings import MODIFIED_MASK
  from ....common.preprocess.cn_processor import CnProcessor
label_desc: Use image node_id 20 for calling the CnSample obj's underlying member method code with example usage: obj.insert_field_before_index(field, index, items) and returns: self