given:
        def rule = withContext(new SinceAnnotationRule([:]))
        def jApiMethod = Stub(JApiMethod)
        jApiMethod.name >> implicitMethod
        jApiMethod.jApiClass >> jApiClassifier
        jApiMethod.parameters >> paramTypes.collect { paramStub(it) }

        when:
        sourceFile.text = """
            public enum $TEST_INTERFACE_SIMPLE_NAME {

        if (member instanceof JApiClass) {
            return isIncubatingClass((JApiClass) member)
        }
        if (member instanceof JApiMethod) {
            return isIncubatingOrOverrideMethod((JApiMethod) member)
        }
        if (member instanceof JApiField) {
            return isIncubatingField((JApiField) member)
        }
        if (member instanceof JApiConstructor) {

            JApiConstructor ctor = (JApiConstructor) member
            inspectParametersNullabilityOf(ctor.oldConstructor.get(), ctor.newConstructor.get())

        } else if (member instanceof JApiMethod) {

            JApiMethod method = (JApiMethod) member
            CtMethod oldMethod = method.oldMethod.get()
            CtMethod newMethod = method.newMethod.get()

            inspectParametersNullabilityOf(oldMethod, newMethod)

import gradlebuild.binarycompatibility.metadata.KotlinMetadataQueries
import japicmp.model.JApiClass
import japicmp.model.JApiCompatibility
import japicmp.model.JApiConstructor
import japicmp.model.JApiField
import japicmp.model.JApiMethod
import javassist.CtBehavior
import javassist.CtClass
import javassist.CtConstructor
import javassist.CtField
import javassist.CtMember
import javassist.CtMethod
import javassist.Modifier