member.jApiClass.let { declaringClass ->
            sources.sourceFileAndSourceRootFor(declaringClass.sourceFilePath).let { (sourceFile, sourceRoot) ->
                if (declaringClass.isKotlin) ApiSourceFile.Kotlin(sourceFile, sourceRoot)
                else ApiSourceFile.Java(sourceFile, sourceRoot)
            }
        }

    private
    val JApiClass.sourceFilePath: String

                        version = "2.0"
                    }
                """
            )
            withDirectory("v1/src/main").v1()
            withDirectory("v2/src/main").v2()
            val sourceRoots = if (File(withDirectory("v2/src/main"), "java").exists()) {
                "v2/src/main/java"
            } else {
                "v2/src/main/kotlin"
            }

        }

    private
    fun <T : Any?> withParsedKotlinSource(sourceRoots: List<File>, block: (List<KtFile>) -> T) =
        Disposer.newDisposable().use {
            parseKotlinFiles(sourceRoots, emptyList()).let(block)
        }

    private
    fun Disposable.parseKotlinFiles(sourceRoots: List<File>, compilationClasspath: List<File>): List<KtFile> {

                addSetupRule(BinaryCompatibilityRepositorySetupRule, [
                    (BinaryCompatibilityRepositorySetupRule.Params.sourceRoots): sourceRoots.collect { it.absolutePath } as Set,
                    (BinaryCompatibilityRepositorySetupRule.Params.sourceCompilationClasspath): newClasspath.collect { it.absolutePath } as Set
                ])

    object Params {
        const val sourceRoots = "sourceRoots"
        const val sourceCompilationClasspath = "sourceCompilationClasspath"
    }

    @Suppress("unchecked_cast")
    override fun execute(context: ViolationCheckContext) {
        (context.userData as MutableMap<String, Any?>)[REPOSITORY_CONTEXT_KEY] = BinaryCompatibilityRepository.openRepositoryFor(
            param(Params.sourceRoots),

     */
    fun sourceFileAndSourceRootFor(sourceFilePath: String): Pair<File, File> =
        sourceRoots.asSequence()
            .map { it.resolve(sourceFilePath) to it }
            .firstOrNull { it.first.isFile }
            ?: throw IllegalStateException("Source file '$sourceFilePath' not found, searched in source roots:\n  - ${sourceRoots.joinToString("\n  - ")}")

    private
    val KtFile.normalizedPath: String?