- !!org.yaml.snakeyaml.issues.issue100.Data 
 &id001 
 id: id123 
 age: 11
- !!org.yaml.snakeyaml.issues.issue100.Data
 <<: *id001
 id: id456
 age: 13 
- !!org.yaml.snakeyaml.issues.issue100.Data
 &id003
 <<: *id001 
 id: id789
- !!org.yaml.snakeyaml.issues.issue100.DataMore
 <<: *id001 
 age: 30
 complete: true
- &id004
 age: 100
- !!org.yaml.snakeyaml.issues.issue100.DataMore
 <<: [*id004, *id003]
