Compress::Zlib::IO::Uncompress::Gunzip - goto metacpan;

Compress::Zlib::IO::Uncompress::Gunzip was first released with perl v5.9.3 (2006-01-28) and removed from v5.9.4 (2006-08-15)
Perl version Module version
v5.9.3 (2006-01-28) 2.000_07