libmoox-role-cloneset-perl 0.1.0-3 (amd64 binary) in ubuntu cosmic

 MooX::Role::CloneSet is a role for immutable objects, providing an easy
 way to create a new object with some modified properties. It provides
 the cset() method that creates a new object with the specified changes,
 shallowly copying all the rest of the original object's properties.