docs: static int getInt (ByteBuffer buffer) {
          int v = buffer.get();
          int value = v & 0x7F;
          if ((v & 0x80) != 0) {
              v = buffer.get();
              value |= (v & 0x7F) << 7;
              if ((v & 0x80) != 0) {
                  v = buffer.get();
                  value |= (v & 0x7F) << 14;
                  if ((v & 0x80) != 0) {
                      v = buffer.get();
                      value |= (v & 0x7F) << 21;
                      if ((v & 0x80) != 0) {
                          v = buffer.get();
                          value |= (v & 0x7F) << 28;
                      }
                  }
              }
          }
          value = (value >>> 1) ^ (-(value & 1));
          return value;
      }