A constructor for a decoder for unzip streams
+ new UnzipDecoderConstructor(): UnzipDecoder
Creates an instance of the decoder
Returns: UnzipDecoder
• compression: number
The compression format for the data stream. This number is determined by the spec in PKZIP's APPNOTE.txt, section 4.4.5. For example, 0 = no compression, 8 = deflate, 14 = LZMA