code: def push(self, fws, string):
      self.append((fws, string))
  
imports: import re
  import binascii
  import email.quoprimime
  import email.base64mime
  from email.errors import HeaderParseError
  from email import charset
label_desc: Use image node_id 2 for calling the _Accumulator obj's underlying member method code with example usage: obj.push(fws, string) without return types