package Moose::Exception::MetaclassMustBeDerivedFromClassMOPClass; BEGIN { $Moose::Exception::MetaclassMustBeDerivedFromClassMOPClass::AUTHORITY = 'cpan:STEVAN'; } $Moose::Exception::MetaclassMustBeDerivedFromClassMOPClass::VERSION = '2.1204'; use Moose; extends 'Moose::Exception'; has 'class_name' => ( is => 'ro', isa => 'Str', required => 1 ); sub _build_message { my $self = shift; "The metaclass (".$self->class_name.") must be derived from Class::MOP::Class"; } 1;