parameters: (self, name)
return_statement: return name.lower() in self.dict
docstring: Determine whether a message contains the named header.
docstring_summary: Determine whether a message contains the named header.
docstring_tokens: Determine whether a message contains the named header .
function: def has_key(self, name):
          """Determine whether a message contains the named header."""
          return name.lower() in self.dict
function_tokens: def has_key ( self , name ) : return name . lower ( ) in self . dict