MyPackage->import(qw(symbol1 symbol2 symbol3));

##</code><code>##

use Type::Params qw( signature_for );
use Types::Standard qw( slurpy Any );

signature_for import => (
    method => 1,
    pos => [ slurpy Any ],
);

sub import {
    warn "Args: ", join(", ", map { ref($_) || $_ } @_), "\n";
    # Shows: Args: MyPackage, ARRAY(0x...)
}