Net::SSH::Perl->new( $host, [identity_files => [$keyfile]);

##</code><code>##

$ perl -MO=Deparse -e 'Net::SSH::Perl->new( $host, [identity_files => [$keyfile]);'
syntax error at -e line 1, near "])"
Missing right curly or square bracket at -e line 1, at end of line
-e had compilation errors.

##</code><code>##

Net::SSH::Perl->new( $host, [identity_files => [$keyfile]]);

##</code><code>##

Net::SSH::Perl->new($host, %params)

##</code><code>##

Net::SSH::Perl->new($host, identity_files => [$keyfile]);