method compose_type
Documentation for method compose_type assembled from the following types:
class Metamodel::Primitives
(Metamodel::Primitives) method compose_type
method compose_type(Mu , )
Composes $type (that is, finalizes it to be ready for instantiation). See https://github.com/perl6/nqp/blob/master/docs/6model/repr-compose-protocol.markdown for what $configuration can contain (until we have better docs, sorry).