class_docstr: A speaker with its names, list of mentions and matching test functions
docstr: Add a Mention of the Speaker
docstr_tok: ["Add","a","Mention","of","the","Speaker"]
code: def add_mention(self, mention):
      """Add a Mention of the Speaker"""
      self.mentions.append(mention)
  
imports: import re
  import io
  from six import string_types, integer_types
  from spacy.tokens import Span, Token
  from neuralcoref.train.compat import unicode_
  from neuralcoref.train.utils import encode_distance, parallel_process
  import spacy
  import numpy
label_desc: Use image node_id 3 for calling the Speaker obj's underlying member method code with example usage: obj.add_mention(mention) without return types