IO::Handle::Prototype - base class for callback based handles.

       You probably want IO::Handle::Prototype::Fallback instead.

perl v5.36.0                                       2023-01-24                         IO::Handle::Prototype(3pm)

       IO::Handle::Prototype - base class for callback based handles.

           my $fh = IO::Handle::Prototype->new(
               getline => sub {
                   my $fh = shift;

                   ...
               },
           );