An input stream containing the VCF contents
An (optional) set of Strings, containing only those samples that should be parsed from the file. If this parameter is non-None, then only those samples (column names) in the set will be contained in the VCFLine values produced by this parser.
(Changed in version 2.8.0) collect has changed. The previous behavior can be reproduced with toSeq.
(Since version 2.10.0) use fold instead
VCFLineParser is a line-by-line (streaming) parser for VCF files, written specifically to support light-weight creation of FlatGenotype records from large (multi-Gb, gzipped) VCF files.