ExtUtils::ModuleMaker allows multiple *.pm files

use ExtUtils::ModuleMaker;

Generate_Module_Files (
    NAME         => 'Sample::Module',
    EXTRA_MODULES=> [
                     {
                      NAME         => 'Sample::Module::Bar',
                      ABSTRACT     => 'a second module',
                     },
                     {
                      NAME         => 'Sample::Baz',
                      ABSTRACT     => 'a third module',
                     },
                    ],
);