One reason is that 
my $private_method = sub {
    get_logger()->info('testing 1 2 3');
};

[download]
wouldn't be able to report the method name.

In reply to Re^2: Real private methods using lexical subs in Perl 5.18. by Arunbear
in thread Real private methods using lexical subs in Perl 5.18. by tobyink

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