docs: def murmur2(data):
      """Pure-python Murmur2 implementation.
  
      Based on java client, see org.apache.kafka.common.utils.Utils.murmur2
  
      Args:
          data (bytes): opaque bytes
  
      Returns: MurmurHash2 of data
      """
      # Python2 bytes is really a str, causing the bitwise operations below to fail
      # so convert to bytearray.
      if six.PY2:
          data = bytearray(bytes(data))
  
      length = len(data)
      seed = 0x9747b28c
      # 'm' and 'r' are mixing constants generated offline.
      # They're not really 'magic', they just happen to work well.
      m = 0x5bd1e995
      r = 24
  
      # Initialize the hash to a random value
      h = seed ^ length
      length4 = length // 4
  
      for i in range(length4):
          i4 = i * 4
          k = ((data[i4 + 0] & 0xff) +
              ((data[i4 + 1] & 0xff) << 8) +
              ((data[i4 + 2] & 0xff) << 16) +
              ((data[i4 + 3] & 0xff) << 24))
          k &= 0xffffffff
          k *= m
          k &= 0xffffffff
          k ^= (k % 0x100000000) >> r # k ^= k >>> r
          k &= 0xffffffff
          k *= m
          k &= 0xffffffff
  
          h *= m
          h &= 0xffffffff
          h ^= k
          h &= 0xffffffff
  
      # Handle the last few bytes of the input array
      extra_bytes = length % 4
      if extra_bytes >= 3:
          h ^= (data[(length & ~3) + 2] & 0xff) << 16
          h &= 0xffffffff
      if extra_bytes >= 2:
          h ^= (data[(length & ~3) + 1] & 0xff) << 8
          h &= 0xffffffff
      if extra_bytes >= 1:
          h ^= (data[length & ~3] & 0xff)
          h &= 0xffffffff
          h *= m
          h &= 0xffffffff
  
      h ^= (h % 0x100000000) >> 13 # h >>> 13;
      h &= 0xffffffff
      h *= m
      h &= 0xffffffff
      h ^= (h % 0x100000000) >> 15 # h >>> 15;
      h &= 0xffffffff
  
      return h