| Element | Missed Instructions | Cov. | Missed Branches | Cov. | Missed | Cxty | Missed | Lines | Missed | Methods |
| Total | 12 of 12 | 0% | 0 of 0 | n/a | 2 | 2 | 3 | 3 | 2 | 2 |
| MapKeySerializationTest.NullKeySerializer(String) | | 0% | n/a | 1 | 1 | 1 | 1 | 1 | 1 | |
| serialize(Object, JsonGenerator, SerializationContext) | | 0% | n/a | 1 | 1 | 2 | 2 | 1 | 1 |