parameters: (self, unixfrom=False, maxheaderlen=None, policy=None)
return_statement: return super().as_string(maxheaderlen=maxheaderlen, policy=policy)
docstring: Return the entire formatted message as a string.
  
          Optional 'unixfrom', when true, means include the Unix From_ envelope
          header.  maxheaderlen is retained for backward compatibility with the
          base Message class, but defaults to None, meaning that the policy value
          for max_line_length controls the header maximum length.  'policy' is
          passed to the Generator instance used to serialize the mesasge; if it
          is not specified the policy associated with the message instance is
          used.
docstring_summary: Return the entire formatted message as a string.
docstring_tokens: Return the entire formatted message as a string .
function: def as_string(self, unixfrom=False, maxheaderlen=None, policy=None):
          """Return the entire formatted message as a string.
  
          Optional 'unixfrom', when true, means include the Unix From_ envelope
          header.  maxheaderlen is retained for backward compatibility with the
          base Message class, but defaults to None, meaning that the policy value
          for max_line_length controls the header maximum length.  'policy' is
          passed to the Generator instance used to serialize the mesasge; if it
          is not specified the policy associated with the message instance is
          used.
          """
          policy = self.policy if policy is None else policy
          if maxheaderlen is None:
              maxheaderlen = policy.max_line_length
          return super().as_string(maxheaderlen=maxheaderlen, policy=policy)
function_tokens: def as_string ( self , unixfrom = False , maxheaderlen = None , policy = None ) : policy = self . policy if policy is None else policy if maxheaderlen is None : maxheaderlen = policy . max_line_length return super ( ) . as_string ( maxheaderlen = maxheaderlen , policy = policy )