Fix Parameterized is hidden by withFullyQualifiedName (#4245)

* Fix `Parametrized` is hidden by `withFullyQualifiedName`

Signed-off-by: Oleh Dokuka <[email protected]>

* Use referential check

Signed-off-by: OlegDokuka <[email protected]>

---------

Signed-off-by: Oleh Dokuka <[email protected]>
Signed-off-by: OlegDokuka <[email protected]>

Author: OlegDokuka

rewrite-java/src/main/java/org/openrewrite/java/tree/JavaType.java

@@ -715,7 +715,12 @@ public String getFullyQualifiedName() {
 
         @Override
         public FullyQualified withFullyQualifiedName(String fullyQualifiedName) {
-            return type.withFullyQualifiedName(fullyQualifiedName);
+            FullyQualified qualified = type.withFullyQualifiedName(fullyQualifiedName);
+            if (type == qualified) {
+                return this;
+            }
+
+            return new Parameterized(managedReference, qualified, typeParameters);
         }
 
         @Override

rewrite-java/src/test/java/org/openrewrite/java/internal/template/TypeParameterTest.java

@@ -89,6 +89,25 @@ void parameterized(String name) {
         assertThat(TypeUtils.toString(type)).isEqualTo(name);
     }
 
+	@ParameterizedTest
+	@ValueSource(strings = {
+	  "java.util.List<java.lang.String>",
+	  "java.util.Map<java.lang.String, java.lang.Integer>",
+	  "java.util.List<? extends java.lang.Object>",
+	  "java.util.List<? super java.lang.Integer>",
+	  "java.util.List<java.util.List<? super java.lang.Integer>>",
+	})
+	void parameterizedWithModifierShouldNeverHideParametrizedType(String name) {
+		TemplateParameterParser parser = new TemplateParameterParser(new CommonTokenStream(new TemplateParameterLexer(
+		  CharStreams.fromString(name))));
+		JavaType type = TypeParameter.toFullyQualifiedName(parser.type());
+
+		JavaType.Parameterized pType = (JavaType.Parameterized) type;
+		assertThat(pType.withFullyQualifiedName("test")).isInstanceOf(JavaType.Parameterized.class);
+		assertThat(pType.withFullyQualifiedName("test")).isNotSameAs(pType);
+		assertThat(pType.withFullyQualifiedName(pType.getFullyQualifiedName())).isSameAs(pType);
+	}
+
     @ParameterizedTest
     @ValueSource(strings = {
       "java.util.List<?>",