use strict;

  package MyClass;

  use Class::MethodMaker
    [ scalar => [qw/ name /],
      new    => [qw/ new  /],
    ];

  package main;

  my $m = MyClass->new;
  my $n;
  $\ = "\n";

  print $m->name_isset ? "true" : "false";     # false

  $m->name("foo");
  $n = $m->name;
  print defined $n ? "->$n<-" : "*undef*";     # ->foo<-
  print $m->name_isset ? "true" : "false";     # true

  $m->name(undef);
  $n = $m->name;
  print defined $n ? "->$n<-" : "*undef*";     # *undef*
  print $m->name_isset ? "true" : "false";     # true

  $m->name_reset;
  $n = $m->name;
  print defined $n ? "->$n<-" : "*undef*";     # *undef*
  print $m->name_isset ? "true" : "false";     # false