1- !StreamStart
2- !DocumentStart { explicit: false }
3- !Scalar { implicit: [true,false], value: 'data' }
4- !DocumentEnd
5- !DocumentStart
6- !Scalar { implicit: [true,false] }
7- !DocumentEnd
8- !DocumentStart { version: [1,1], tags: { '!': '!foo', '!yaml!': 'tag:yaml.org,2002:', '!ugly!': '!!!!!!!' } }
9- !Scalar { implicit: [true,false] }
10- !DocumentEnd
11- !StreamEnd
12