def METHOD_NAME(self) -> Tuple[str, Sequence[int]]:
    size = self.read_int()
    chunktype = self.read_chars(4)
    chunkdata = self.read(size)
    if len(chunkdata) != size:  # pragma: no cover
        raise ValueError("Invalid chunk length")
    self.skip(4)
    return chunktype, chunkdata