code: def from_byte_array(cls, bytes_):
          
          runs = cls._length_run_coding.parse(bytes_)
          pixels = (run.pixels for run in runs.data)
          data = "".join(itertools.chain.from_iterable(pixels))
          return cls(data)
docs: Decodes a run-length encoded ByteArray and returns a Bitmap.
          The ByteArray decompresses to a sequence of 32-bit values, which are
          stored as a byte string. (The specific encoding depends on Form.depth.)