Fix minor code conventions for contribution

Author: seongahjo

fixture-monkey-api/src/main/java/com/navercorp/fixturemonkey/api/matcher/DefaultMatcherOperatorContainer.java

@@ -19,6 +19,8 @@
 
 package com.navercorp.fixturemonkey.api.matcher;
 
+import static org.apiguardian.api.API.Status.INTERNAL;
+
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.Comparator;
@@ -28,10 +30,16 @@
 import java.util.concurrent.atomic.AtomicInteger;
 import java.util.stream.Collectors;
 
+import org.apiguardian.api.API;
+
 import com.navercorp.fixturemonkey.api.property.Property;
 import com.navercorp.fixturemonkey.api.type.Types;
 import com.navercorp.fixturemonkey.api.type.Types.UnidentifiableType;
 
+/**
+ * It is for internal use only.
+ */
+@API(since = "1.1.16", status = INTERNAL)
 public final class DefaultMatcherOperatorContainer<T>
 	implements MatcherOperatorRegistry<T>, MatcherOperatorRetriever<T> {
 	private final AtomicInteger sequenceIssuer = new AtomicInteger(0);
@@ -54,17 +62,21 @@ public List<MatcherOperator<T>> getListByProperty(Property property) {
 		Class<?> propertyType = Types.getActualType(property.getType());
 		List<PriorityMatcherOperator<T>> acc = new ArrayList<>(typeUnknownIntrospectors);
 
-		if (propertyType != UnidentifiableType.class) {
-			for (Map.Entry<Class<?>, List<PriorityMatcherOperator<T>>> e : typeAssignableIntrospectors.entrySet()) {
-				Class<?> anchorType = e.getKey();
-				if (anchorType.isAssignableFrom(propertyType)) {
-					acc.addAll(e.getValue());
-				}
-			}
+		if (propertyType == UnidentifiableType.class) {
+			return typeAssignableIntrospectors.getOrDefault(propertyType, Collections.emptyList()).stream()
+				.map(it -> (MatcherOperator<T>)it)
+				.collect(Collectors.toList());
+		}
 
-			acc.addAll(typeAwareIntrospectors.getOrDefault(propertyType, Collections.emptyList()));
+		for (Map.Entry<Class<?>, List<PriorityMatcherOperator<T>>> e : typeAssignableIntrospectors.entrySet()) {
+			Class<?> anchorType = e.getKey();
+			if (anchorType.isAssignableFrom(propertyType)) {
+				acc.addAll(e.getValue());
+			}
 		}
 
+		acc.addAll(typeAwareIntrospectors.getOrDefault(propertyType, Collections.emptyList()));
+
 		return acc.stream()
 			.sorted(Comparator.comparingInt(PriorityMatcherOperator::getPriority))
 			.map(op -> (MatcherOperator<T>)op)

fixture-monkey-api/src/main/java/com/navercorp/fixturemonkey/api/matcher/MatcherOperatorRegistry.java

@@ -18,13 +18,15 @@
 
 package com.navercorp.fixturemonkey.api.matcher;
 
-import static org.apiguardian.api.API.Status.EXPERIMENTAL;
+import static org.apiguardian.api.API.Status.INTERNAL;
 
 import org.apiguardian.api.API;
 
-@API(since = "1.1.16", status = EXPERIMENTAL)
+/**
+ * It is for internal use only.
+ */
+@API(since = "1.1.16", status = INTERNAL)
 public interface MatcherOperatorRegistry<T> {
-
 	void addFirst(MatcherOperator<T> matcherOperator);
 
 	void addLast(MatcherOperator<T> matcherOperator);

fixture-monkey-api/src/main/java/com/navercorp/fixturemonkey/api/matcher/MatcherOperatorRetriever.java

@@ -18,12 +18,19 @@
 
 package com.navercorp.fixturemonkey.api.matcher;
 
+import static org.apiguardian.api.API.Status.INTERNAL;
+
 import java.util.List;
 
+import org.apiguardian.api.API;
+
 import com.navercorp.fixturemonkey.api.property.Property;
 
+/**
+ * It is for internal use only.
+ */
+@API(since = "1.1.16", status = INTERNAL)
 public interface MatcherOperatorRetriever<T> {
-
 	List<MatcherOperator<T>> getList();
 
 	List<MatcherOperator<T>> getListByProperty(Property property);