function getDatatype(attributes) {
  let foundFloatDatatype = false;
  const length = attributes.length;
  for (let i = 0; i < length; ++i) {
    if (attributes[i].componentDatatype !== ComponentDatatype.UNSIGNED_BYTE) {
      foundFloatDatatype = true;
      break;
    }
  }
  return foundFloatDatatype ? PixelDatatype.FLOAT : PixelDatatype.UNSIGNED_BYTE;
}
The number of instances.
@memberOf BatchTable.prototype
@type {number}
@readonly