The 'Class::Generate' package exports functions that take as arguments a
class specification and create from these specifications a Perl 5 class.
The specification language allows many object-oriented constructs: typed
members, inheritance, private members, required members, default values,
object methods, class methods, class variables, and more.

CPAN contains similar packages. Why another? Because object-oriented
programming, especially in a dynamic language like Perl, is a complicated
endeavor. I wanted a package that would work very hard to catch the errors
you (well, I anyway) commonly make. I wanted a package that could help me
enforce the contract of object-oriented programming. I also wanted it to
get out of my way when I asked.