4.x
4.x: Unit test lambdaification 14 of N (#8155)
4.x: Unit test lambdaification 17 of N (#8158)
4.x: Unit test lambdaification 15 of N (#8156)
4.x: Unit test lambdaification 21 of N (#8163)
4.x: Unit test lambdaification 23 of 23 (#8165)