Problem: generated API model have void for dup method (#366)
Problem: generated API model have void for dup method (#366)

* Problem: generated API model have void for dup method

Solution: note that dup returns fresh instance of class.name
zeromq/zproto,jdiez17/zproto,zeromq/zproto,zeromq/zproto,vyskocilm/zproto,sappo/zproto,bkmit/zproto,jdiez17/zproto,jdiez17/zproto,vyskocilm/zproto,sappo/zproto,somdoron/zproto,jdiez17/zproto,bkmit/zproto,sappo/zproto,somdoron/zproto,sappo/zproto,vyskocilm/zproto,somdoron/zproto,bkmit/zproto,somdoron/zproto,jdiez17/zproto,bkmit/zproto,somdoron/zproto,somdoron/zproto,vyskocilm/zproto,sappo/zproto,jdiez17/zproto,bkmit/zproto,vyskocilm/zproto,zeromq/zproto,zeromq/zproto,vyskocilm/zproto,somdoron/zproto,sappo/zproto,zeromq/zproto,jdiez17/zproto,sappo/zproto,bkmit/zproto,bkmit/zproto,zeromq/zproto,vyskocilm/zproto