Test for the jspecify NullMarked migration

Author: Braam Wijsmuller

src/test/java/org/openrewrite/java/migrate/jspecify/MigrateToJspecifyTest.java

@@ -82,6 +82,21 @@ class Bar {
                     }
                   }
                   """
+              ),
+              // package-info.java
+              java(
+                """
+                  @ParametersAreNonnullByDefault
+                  package org.openrewrite.example;
+
+                  import javax.annotation.ParametersAreNonnullByDefault;
+                  """,
+                """
+                  @NullMarked
+                  package org.openrewrite.example;
+
+                  import org.jspecify.annotation.NullMarked;
+                  """
               )
             ),
             //language=xml
@@ -136,7 +151,7 @@ void migrateFromJakartaAnnotationApiToJspecify() {
                 """
                   import jakarta.annotation.Nonnull;
                   import jakarta.annotation.Nullable;
-                  
+
                   public class Test {
                       @Nonnull
                       public String field1;
@@ -145,7 +160,7 @@ public class Test {
                       @Nullable
                       public Foo.Bar foobar;
                   }
-                  
+
                   interface Foo {
                     class Bar {
                       @Nonnull
@@ -156,16 +171,16 @@ class Bar {
                 """
                   import org.jspecify.annotations.NonNull;
                   import org.jspecify.annotations.Nullable;
-                  
+
                   public class Test {
                       @NonNull
                       public String field1;
                       @Nullable
                       public String field2;
-                  
+
                       public Foo.@Nullable Bar foobar;
                   }
-                  
+
                   interface Foo {
                     class Bar {
                       @NonNull
@@ -228,7 +243,7 @@ void migrateFromJetbrainsAnnotationsToJspecify() {
                 """
                   import org.jetbrains.annotations.NotNull;
                   import org.jetbrains.annotations.Nullable;
-                  
+
                   public class Test {
                       @NotNull
                       public String field1;
@@ -237,7 +252,7 @@ public class Test {
                       @Nullable
                       public Foo.Bar foobar;
                   }
-                  
+
                   interface Foo {
                     class Bar {
                       @NotNull
@@ -248,16 +263,16 @@ class Bar {
                 """
                   import org.jspecify.annotations.NonNull;
                   import org.jspecify.annotations.Nullable;
-                  
+
                   public class Test {
                       @NonNull
                       public String field1;
                       @Nullable
                       public String field2;
-                  
+
                       public Foo.@Nullable Bar foobar;
                   }
-                  
+
                   interface Foo {
                     class Bar {
                       @NonNull