def get_all_letters(self, params=None):
        """
        Get all letters
        This will iterate over all pages until it gets all elements.
        So if the rate limit exceeded it will throw an Exception and you will get nothing

        :param params: search params
        :return: list
        """
        if not params:
            params = {}
        return self._iterate_through_pages(self.get_letters_per_page, resource=LETTERS, **{'params': params})
Get all letters
        This will iterate over all pages until it gets all elements.
        So if the rate limit exceeded it will throw an Exception and you will get nothing

        :param params: search params
        :return: list