public class VCFFile
@Synchronized @Nullable public static htsjdk.variant.vcf.VCFFileReader vcfFileReader(@NotNull java.lang.String vcfFile, @Nullable htsjdk.variant.vcf.VCFFileReader readerReturned)
Gets a VCFFileReader for the given file. If the file is already open, it will return the existing reader. readerReturned is used to return it to the cache for use by other threads.