parameterize the struct factory
parameterize the struct factory

nchinmay/capnproto-java,jen20/capnproto-java,dwrensha/capnproto-java,jen20/capnproto-java,dwrensha/capnproto-java,nchinmay/capnproto-java,dwrensha/capnproto-java,nchinmay/capnproto-java,jen20/capnproto-java