Node.setStyle

import dyaml.dumper;
auto stream = new Appender!string();
auto node = Node([1, 2, 3, 4, 5]);
node.setStyle(CollectionStyle.block);

auto dumper = dumper();
dumper.dump(stream, node);

import dyaml.dumper;
auto stream = new Appender!string();
auto node = Node(4);
node.setStyle(ScalarStyle.literal);

auto dumper = dumper();
dumper.dump(stream, node);