| Element | Missed Instructions | Cov. | Missed Branches | Cov. | Missed | Cxty | Missed | Lines | Missed | Methods |
| Total | 59 of 74 | 20% | 0 of 0 | n/a | 5 | 7 | 17 | 20 | 5 | 7 |
| deepCopy() | | 0% | n/a | 1 | 1 | 7 | 7 | 1 | 1 | |
| transformExtension(Consumer) | | 0% | n/a | 1 | 1 | 3 | 3 | 1 | 1 | |
| lambda$withNewChildren$0(NodeChildrenContainer, UnionTypeExtensionDefinition.Builder) | | 0% | n/a | 1 | 1 | 3 | 3 | 1 | 1 | |
| toString() | | 0% | n/a | 1 | 1 | 4 | 4 | 1 | 1 | |
| withNewChildren(NodeChildrenContainer) | | 0% | n/a | 1 | 1 | 1 | 1 | 1 | 1 | |
| UnionTypeExtensionDefinition(String, List, List, Description, SourceLocation, List, IgnoredChars, Map) | | 100% | n/a | 0 | 1 | 0 | 2 | 0 | 1 | |
| newUnionTypeExtensionDefinition() | | 100% | n/a | 0 | 1 | 0 | 1 | 0 | 1 |