diff --git a/examples/kotlin/build.gradle b/examples/kotlin/build.gradle
index c5029c9..2536081 100644
--- a/examples/kotlin/build.gradle
+++ b/examples/kotlin/build.gradle
@@ -13,5 +13,6 @@ dependencies {
 }
 
 test {
+    forkEvery 1
     useJUnitPlatform()
 }
diff --git a/examples/spock13/build.gradle b/examples/spock13/build.gradle
index 61b45cd..4b2fd43 100644
--- a/examples/spock13/build.gradle
+++ b/examples/spock13/build.gradle
@@ -11,3 +11,7 @@ dependencies {
     testImplementation 'org.spockframework:spock-core'
     testImplementation 'org.objenesis:objenesis:3.1'
 }
+
+test {
+    forkEvery 1
+}
\ No newline at end of file
diff --git a/examples/spock13/src/test/groovy/io/github/joke/spockmockable/PersonTestWithInheritance.groovy b/examples/spock13/src/test/groovy/io/github/joke/spockmockable/PersonTestWithInheritance.groovy
new file mode 100644
index 0000000..6475079
--- /dev/null
+++ b/examples/spock13/src/test/groovy/io/github/joke/spockmockable/PersonTestWithInheritance.groovy
@@ -0,0 +1,67 @@
+package io.github.joke.spockmockable
+
+import org.spockframework.mock.MockUtil
+
+class PersonTestWithInheritance extends TestBase {
+
+    def mockUtil = new MockUtil()
+
+    def 'final from class is removed'() {
+        setup:
+        Person person = Mock()
+
+        expect:
+        mockUtil.isMock person
+    }
+
+    def 'final from subclass is removed'() {
+        setup:
+        Person.Address address = Mock()
+
+        expect:
+        mockUtil.isMock address
+    }
+
+    def 'final from method is removed'() {
+        setup:
+        Person person = Mock()
+
+        when:
+        def res = person.firstName
+
+        then:
+        1 * person.firstName >> 'Dorothy'
+
+        expect:
+        res == 'Dorothy'
+    }
+
+    def 'privat on method is now protected'() {
+        setup:
+        Person person = Mock()
+
+        when:
+        def res = person.lastName
+
+        then:
+        1 * person.lastName >> 'Gale'
+
+        expect:
+        res == 'Gale'
+    }
+
+    def 'final is removed and privat on method is now protected'() {
+        setup:
+        Person person = Mock()
+
+        when:
+        def res = person.address.street
+
+        then:
+        1 * person.address >> new Person.Address('Yellow Brick Road')
+
+        expect:
+        res == 'Yellow Brick Road'
+    }
+
+}
diff --git a/examples/spock13/src/test/groovy/io/github/joke/spockmockable/TestBase.groovy b/examples/spock13/src/test/groovy/io/github/joke/spockmockable/TestBase.groovy
new file mode 100644
index 0000000..38d371b
--- /dev/null
+++ b/examples/spock13/src/test/groovy/io/github/joke/spockmockable/TestBase.groovy
@@ -0,0 +1,7 @@
+package io.github.joke.spockmockable;
+
+import spock.lang.Specification;
+
+@Mockable([Person, Person.Address])
+abstract class TestBase extends Specification {
+}
diff --git a/examples/spock20/build.gradle b/examples/spock20/build.gradle
index 473c241..90ece96 100644
--- a/examples/spock20/build.gradle
+++ b/examples/spock20/build.gradle
@@ -12,5 +12,6 @@ dependencies {
 }
 
 test {
+    forkEvery 1
     useJUnitPlatform()
 }
diff --git a/examples/spring/build.gradle b/examples/spring/build.gradle
index afb0836..e3dbf55 100644
--- a/examples/spring/build.gradle
+++ b/examples/spring/build.gradle
@@ -18,5 +18,6 @@ dependencies {
 }
 
 test {
+    forkEvery 1
     useJUnitPlatform()
 }
diff --git a/examples/spring/src/test/groovy/io/github/joke/spockmockable/ControllerTestBase.groovy b/examples/spring/src/test/groovy/io/github/joke/spockmockable/ControllerTestBase.groovy
new file mode 100644
index 0000000..a6908f4
--- /dev/null
+++ b/examples/spring/src/test/groovy/io/github/joke/spockmockable/ControllerTestBase.groovy
@@ -0,0 +1,10 @@
+package io.github.joke.spockmockable
+
+
+import org.springframework.boot.test.autoconfigure.web.servlet.WebMvcTest
+import spock.lang.Specification
+
+@Mockable(SimpleService)
+@WebMvcTest(controllers = SimpleController)
+abstract class ControllerTestBase extends Specification {
+}
diff --git a/examples/spring/src/test/groovy/io/github/joke/spockmockable/ControllerTestFromBase.groovy b/examples/spring/src/test/groovy/io/github/joke/spockmockable/ControllerTestFromBase.groovy
new file mode 100644
index 0000000..49d0fa7
--- /dev/null
+++ b/examples/spring/src/test/groovy/io/github/joke/spockmockable/ControllerTestFromBase.groovy
@@ -0,0 +1,30 @@
+package io.github.joke.spockmockable
+
+import org.spockframework.spring.SpringBean
+import org.springframework.beans.factory.annotation.Autowired
+import org.springframework.test.web.servlet.MockMvc
+
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get
+
+@Mockable(SimpleService)
+
+class ControllerTestFromBase extends ControllerTestBase {
+
+    @SpringBean
+    SimpleService simpleService = Mock()
+
+    @Autowired
+    MockMvc mockMvc
+
+    def 'final from class is removed'() {
+        when:
+        def response = mockMvc.perform(get('/name')).andReturn().response
+
+        then:
+        1 * simpleService.name >> 'This is a mock'
+
+        expect:
+        response.contentAsString == 'This is a mock'
+    }
+
+}