Add a comment to an existing file.

        Args:
            comment (str): The body of the comment.
                e.g. 'Everyone should take a moment to read this file.'
            file (str): The file id. e.g. 'F1234467890'

def files_comments_add(self, *, comment: str, file: str, **kwargs) -> SlackResponse:
        """Add a comment to an existing file.

        Args:
            comment (str): The body of the comment.
                e.g. 'Everyone should take a moment to read this file.'
            file (str): The file id. e.g. 'F1234467890'
        """
        kwargs.update({"comment": comment, "file": file})
        return self.api_call("files.comments.add", json=kwargs)