private async void SavePbis(IFileSystem archiveFileSystem, IList <IList <PointMapping> > mappings, IList <PointMapping> distinctPointMappings)
{
for (var pbiIndex = 0; pbiIndex < mappings.Count; pbiIndex++)
{
var pbiFile = $"{pbiIndex:000}.pbi";
var pbiStream = await archiveFileSystem.OpenFileAsync(pbiFile);
var copy = new byte[0x8];
pbiStream.Read(copy, 0, copy.Length);
var output = new MemoryStream();
var bw = new BinaryWriterX(output, true);
bw.Write(copy);
bw.Write(mappings[pbiIndex].Count);
var mappingIndices = mappings[pbiIndex]
.Select(x => (short)distinctPointMappings.IndexOf(x))
.ToArray();
WriteMultipleCompressed(bw, mappingIndices, Level5CompressionMethod.Lz10);
archiveFileSystem.SetFileData(pbiFile, output);
bw.Dispose();
}
}