use Params::Validate;

sub foo {
    my ($self, $object_or_class)
      = validate_pos( @_,
                      1, # or strictly, { isa => __PACKAGE__, type => 
+OBJECT },
                      { can => \ @methods } );

    ....
}

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In reply to Re: Class capabilities by diotalevi
in thread Class capabilities by Ovid

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