}

    private
    fun extractParameterNamesIndexFrom(sources: Set<File>, classpath: Set<File>): Map<String, String> =
        isolatedClassLoaderFor(classpath).use { loader ->
            javaProjectBuilderFor(loader)
                .sequenceOfJavaSourcesFrom(sources)
                .flatMap { it.classes.asSequence().filter { it.isPublic } }

        "SetProperty.java",
    )

    private
    val loader: URLClassLoader =
        isolatedClassLoaderFor(classPath)

    private
    val builder: JavaProjectBuilder =
        javaProjectBuilderFor(loader, sourcePath)

    fun since(functionSignature: String): String? {

        val javaFunction = parsedJavaFunctionOf(functionSignature)

        val matchingType = builder.sources