sub something {
    my ( $self, $param ) = @_;
    return _stuff($param);
}

##</code><code>##

sub something {
    log_msg('starting sub');
    my ( $self, $param ) = @_;
    return _stuff($param);
}

##</code><code>##

sub import {
    my $package_name = shift;

    if (
        $package_name !~ /^Application::Stuff_I_Dont_Want_To_Alter::/
    ) {
        no strict 'refs';
        no warnings 'redefine';

        foreach ( keys %{ *{ $package_name . '::' } } ) {
            next if (
                $_ !~ /[a-z]/ or
                $_ =~ /::$/ or
                $_ eq 'isa' or
                $_ eq 'import'
            );

            if ( *{ $package_name, '::', $_ }{'CODE'} ) {
                my $code = do{
                    *{ $package_name, '::', $_ }{'CODE'};
                };

                *{ $package_name, '::', $_ } = sub {
                    warn "BEGIN sub block...\n";
                    my @rv = $code->(@_);
                    warn "END sub block...\n";
                    return @rv;
                };
            }
        }
    }
}