parameters: (self, key, val)
docstring: cookielib has no legitimate use for this method; add it back if you find one.
docstring_summary: cookielib has no legitimate use for this method; add it back if you find one.
docstring_tokens: cookielib has no legitimate use for this method ; add it back if you find one .
function: def add_header(self, key, val):
          """cookielib has no legitimate use for this method; add it back if you find one."""
          raise NotImplementedError("Cookie headers should be added with add_unredirected_header()")
function_tokens: def add_header ( self , key , val ) : raise NotImplementedError ( "Cookie headers should be added with add_unredirected_header()" )