* This is an inner class, as it must be able to call readRawModel()
 *
 * @since 4.0.0
 */
class DefaultModelTransformerContextBuilder implements ModelTransformerContextBuilder {
    private final Graph dag = new Graph();
    private final DefaultModelBuilder defaultModelBuilder;
    private final DefaultModelTransformerContext context;

    private final Map<String, Set<ModelSource>> mappedSources = new ConcurrentHashMap<>(64);

    // reachable from files that will be compiled, and include files these inline accessors
    // to the set of files that will be compiled (and do the same for these files recursively).
    // As it's basically a DAG traversal, we can keep a queue instead of making recursive calls.
    val allFiles = this
    val filesQueueToAnalyze = ArrayDeque(allFiles)