Add Moose package

CPAN/Moose/Exception/AttributeConflictInRoles.pm

@@ -0,0 +1,32 @@
+package Moose::Exception::AttributeConflictInRoles;
+our $VERSION = '2.2207';
+
+use Moose;
+extends 'Moose::Exception';
+with 'Moose::Exception::Role::Role';
+
+has 'second_role_name' => (
+    is       => 'ro',
+    isa      => 'Str',
+    required => 1
+);
+
+has 'attribute_name' => (
+    is       => 'ro',
+    isa      => 'Str',
+    required => 1
+);
+
+sub _build_message {
+    my $self             = shift;
+    my $role_name        = $self->role_name;
+    my $second_role_name = $self->second_role_name;
+    my $attribute_name   = $self->attribute_name;
+    "Role '$role_name' has encountered an attribute conflict"
+    . " while being composed into '$second_role_name'."
+    . " This is a fatal error and cannot be disambiguated."
+    . " The conflicting attribute is named '$attribute_name'.";
+}
+
+__PACKAGE__->meta->make_immutable;
+1;