The imglib2-realtransform 4.0.0 release breaks backwards compatibility:
$ mvn -Dimglib2-realtransform.version=4.0.0 clean test
...
[ERROR] .../imglib2-roi/src/test/java/net/imglib2/roi/geom/OperatorsTest.java:[810,48] type net.imglib2.realtransform.DeformationFieldTransform does not take parameters
[ERROR] .../imglib2-roi/src/test/java/net/imglib2/roi/geom/OperatorsTest.java:[810,112] cannot infer type arguments for net.imglib2.realtransform.DeformationFieldTransform
reason: cannot use '<>' with non-generic class net.imglib2.realtransform.DeformationFieldTransform
The imglib2-realtransform 4.0.0 release breaks backwards compatibility: