Class MultiFileStructureWriter

                 object --+    
                          |    
_ReaderWriterContextManager --+
                              |
                             MultiFileStructureWriter

Known Subclasses:

• structutils.io.MultiFileWriter

Similar to StructureWriter, except that it writes to multiple files,
while keeping the number of structures per file under sts_per_file.

Files will be named <basename>-NNN<extension>. Default extension is *.maegz.

Options:
  basename - The base name of the written files
  extension - The extension of the written files (default ".maegz")
  sts_per_file - Maximum number of structures to write to each file (default 100000)

Usage:
  writer = MultiFileWriter(out_basename, ".maegz", 50)
  for st in sts:
      writer.append(st)
  writer.close()
  written_files = writer.getFiles()