Make deprecated IterableCodec package-private

It's still used by IterableCodecProvider, so it can't be removed entirely.
(Though IterableCodecProvider is almost entirely supplanted by CollectionCodecProvider,
it was not itself deprecated because it provides a codec for any Iterable, while
CollectionCodecProvider only provides one for any Collection, which is not quite the
same thing).

JAVA-5142

bson/src/main/org/bson/codecs/IterableCodec.java

@@ -31,37 +31,16 @@
 
 /**
  * Encodes and decodes {@code Iterable} objects.
- *
- * @since 3.3
- * @deprecated Prefer {@link CollectionCodecProvider}
  */
-@Deprecated
 @SuppressWarnings("rawtypes")
-public class IterableCodec implements Codec<Iterable>, OverridableUuidRepresentationCodec<Iterable> {
+class IterableCodec implements Codec<Iterable>, OverridableUuidRepresentationCodec<Iterable> {
 
     private final CodecRegistry registry;
     private final BsonTypeCodecMap bsonTypeCodecMap;
     private final Transformer valueTransformer;
     private final UuidRepresentation uuidRepresentation;
 
-    /**
-     * Construct a new instance with the given {@code CodecRegistry} and {@code BsonTypeClassMap}.
-     *
-     * @param registry the non-null codec registry
-     * @param bsonTypeClassMap the non-null BsonTypeClassMap
-     */
-    public IterableCodec(final CodecRegistry registry, final BsonTypeClassMap bsonTypeClassMap) {
-        this(registry, bsonTypeClassMap, null);
-    }
-
-    /**
-     * Construct a new instance with the given {@code CodecRegistry} and {@code BsonTypeClassMap}.
-     *
-     * @param registry the non-null codec registry
-     * @param bsonTypeClassMap the non-null BsonTypeClassMap
-     * @param valueTransformer the value Transformer
-     */
-    public IterableCodec(final CodecRegistry registry, final BsonTypeClassMap bsonTypeClassMap, final Transformer valueTransformer) {
+    IterableCodec(final CodecRegistry registry, final BsonTypeClassMap bsonTypeClassMap, final Transformer valueTransformer) {
         this(registry, new BsonTypeCodecMap(notNull("bsonTypeClassMap", bsonTypeClassMap), registry), valueTransformer,
                 UuidRepresentation.UNSPECIFIED);
     }

bson/src/test/unit/org/bson/codecs/IterableCodecSpecification.groovy

@@ -43,15 +43,15 @@ class IterableCodecSpecification extends Specification {
 
     def 'should have Iterable encoding class'() {
         given:
-        def codec = new IterableCodec(REGISTRY, new BsonTypeClassMap())
+        def codec = new IterableCodec(REGISTRY, new BsonTypeClassMap(), null)
 
         expect:
         codec.getEncoderClass() == Iterable
     }
 
     def 'should encode an Iterable to a BSON array'() {
         given:
-        def codec = new IterableCodec(REGISTRY, new BsonTypeClassMap())
+        def codec = new IterableCodec(REGISTRY, new BsonTypeClassMap(), null)
         def writer = new BsonDocumentWriter(new BsonDocument())
 
         when:
@@ -66,7 +66,7 @@ class IterableCodecSpecification extends Specification {
 
     def 'should decode a BSON array to an Iterable'() {
         given:
-        def codec = new IterableCodec(REGISTRY, new BsonTypeClassMap())
+        def codec = new IterableCodec(REGISTRY, new BsonTypeClassMap(), null)
         def reader = new BsonDocumentReader(parse('{array : [1, 2, 3, null]}'))
 
         when:
@@ -81,7 +81,7 @@ class IterableCodecSpecification extends Specification {
 
     def 'should decode a BSON array of arrays to an Iterable of Iterables'() {
         given:
-        def codec = new IterableCodec(REGISTRY, new BsonTypeClassMap())
+        def codec = new IterableCodec(REGISTRY, new BsonTypeClassMap(), null)
         def reader = new BsonDocumentReader(parse('{array : [[1, 2], [3, 4, 5]]}'))
 
         when:
@@ -116,7 +116,7 @@ class IterableCodecSpecification extends Specification {
     def 'should decode binary subtype 3 for UUID'() {
         given:
         def reader = new BsonDocumentReader(parse(document))
-        def codec = new IterableCodec(fromCodecs(new UuidCodec(representation), new BinaryCodec()), new BsonTypeClassMap())
+        def codec = new IterableCodec(fromCodecs(new UuidCodec(representation), new BinaryCodec()), new BsonTypeClassMap(), null)
                 .withUuidRepresentation(representation)
 
         when:
@@ -142,7 +142,7 @@ class IterableCodecSpecification extends Specification {
     def 'should decode binary subtype 4 for UUID'() {
         given:
         def reader = new BsonDocumentReader(parse(document))
-        def codec = new IterableCodec(fromCodecs(new UuidCodec(representation), new BinaryCodec()), new BsonTypeClassMap())
+        def codec = new IterableCodec(fromCodecs(new UuidCodec(representation), new BinaryCodec()), new BsonTypeClassMap(), null)
                 .withUuidRepresentation(representation)
 
         when: