diff --git a/app/src/main/java/com/github/aleksandermielczarek/observablecacheexample/ui/MainActivity.java b/app/src/main/java/com/github/aleksandermielczarek/observablecacheexample/ui/MainActivity.java
index 96d3f3d..3aca516 100644
--- a/app/src/main/java/com/github/aleksandermielczarek/observablecacheexample/ui/MainActivity.java
+++ b/app/src/main/java/com/github/aleksandermielczarek/observablecacheexample/ui/MainActivity.java
@@ -30,7 +30,7 @@ public class MainActivity extends AppCompatActivity {
     @Override
     protected void onCreate(@Nullable Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
-        Napkin.provideComponent(this, AppComponent.class).inject(this);
+        Napkin.<AppComponent>provideComponent(this).inject(this);
         mainViewModel.restoreState(state);
         ActivityMainBinding binding = DataBindingUtil.setContentView(this, R.layout.activity_main);
         binding.setViewModel(mainViewModel);
diff --git a/app/src/main/java/com/github/aleksandermielczarek/observablecacheexample/ui/MainViewModel.java b/app/src/main/java/com/github/aleksandermielczarek/observablecacheexample/ui/MainViewModel.java
index c8a403e..9b31cd2 100644
--- a/app/src/main/java/com/github/aleksandermielczarek/observablecacheexample/ui/MainViewModel.java
+++ b/app/src/main/java/com/github/aleksandermielczarek/observablecacheexample/ui/MainViewModel.java
@@ -94,15 +94,15 @@ public void testCompletable(Completable completable) {
     }
 
     public void restoreObservables() {
-        observableCache.getObservable(OBSERVABLE_CACHE_KEY_OBSERVABLE, String.class)
+        observableCache.<String>getObservable(OBSERVABLE_CACHE_KEY_OBSERVABLE)
                 .ifPresent(this::testObservable)
-                .thanGetSingle(OBSERVABLE_CACHE_KEY_SINGLE, String.class)
+                .<String>thanGetSingle(OBSERVABLE_CACHE_KEY_SINGLE)
                 .ifPresent(this::testSingle)
                 .thanGetCompletable(OBSERVABLE_CACHE_KEY_COMPLETABLE)
                 .ifPresent(this::testCompletable)
-                .thanGetObservable(OBSERVABLE_CACHE_KEY_OBSERVABLE_ERROR, String.class)
+                .<String>thanGetObservable(OBSERVABLE_CACHE_KEY_OBSERVABLE_ERROR)
                 .ifPresent(this::testObservable)
-                .thanGetSingle(OBSERVABLE_CACHE_KEY_SINGLE_ERROR, String.class)
+                .<String>thanGetSingle(OBSERVABLE_CACHE_KEY_SINGLE_ERROR)
                 .ifPresent(this::testSingle)
                 .thanGetCompletable(OBSERVABLE_CACHE_KEY_COMPLETABLE_ERROR)
                 .ifPresent(this::testCompletable);
diff --git a/observablecache/src/main/java/com/github/aleksandermielczarek/observablecache/LruObservableCache.java b/observablecache/src/main/java/com/github/aleksandermielczarek/observablecache/LruObservableCache.java
index 4fd2457..805981d 100644
--- a/observablecache/src/main/java/com/github/aleksandermielczarek/observablecache/LruObservableCache.java
+++ b/observablecache/src/main/java/com/github/aleksandermielczarek/observablecache/LruObservableCache.java
@@ -10,7 +10,7 @@
  * Created by Aleksander Mielczarek on 30.10.2016.
  */
 
-public class LruObservableCache extends ObservableCache {
+public final class LruObservableCache extends ObservableCache {
 
     public static final int DEFAULT_CACHE_SIZE = 16;
 
diff --git a/observablecache/src/main/java/com/github/aleksandermielczarek/observablecache/ObservableCache.java b/observablecache/src/main/java/com/github/aleksandermielczarek/observablecache/ObservableCache.java
index 3df38b8..d4820f6 100644
--- a/observablecache/src/main/java/com/github/aleksandermielczarek/observablecache/ObservableCache.java
+++ b/observablecache/src/main/java/com/github/aleksandermielczarek/observablecache/ObservableCache.java
@@ -74,10 +74,6 @@ public <T> ObservableFromCache<T> getObservable(String key) {
         return new ObservableFromCache<>(observableFromCache, this);
     }
 
-    public <T> ObservableFromCache<T> getObservable(String key, Class<T> observableClass) {
-        return getObservable(key);
-    }
-
     public <T> SingleFromCache<T> getSingle(String key) {
         Observable<T> observableFromCache = getFromCache(key);
         if (observableFromCache != null) {
@@ -86,10 +82,6 @@ public <T> SingleFromCache<T> getSingle(String key) {
         return new SingleFromCache<>(null, this);
     }
 
-    public <T> SingleFromCache<T> getSingle(String key, Class<T> singleClass) {
-        return getSingle(key);
-    }
-
     public CompletableFromCache getCompletable(String key) {
         Observable<?> observableFromCache = getFromCache(key);
         if (observableFromCache != null) {
diff --git a/observablecache/src/main/java/com/github/aleksandermielczarek/observablecache/ValueFromCache.java b/observablecache/src/main/java/com/github/aleksandermielczarek/observablecache/ValueFromCache.java
index de1b6a0..9235667 100644
--- a/observablecache/src/main/java/com/github/aleksandermielczarek/observablecache/ValueFromCache.java
+++ b/observablecache/src/main/java/com/github/aleksandermielczarek/observablecache/ValueFromCache.java
@@ -21,6 +21,11 @@ public boolean isPresent() {
         return valueFromCache != null;
     }
 
+    @Nullable
+    public T get() {
+        return valueFromCache;
+    }
+
     public ValueFromCache<T, S, U> ifPresent(S valueInCacheAction) {
         if (isPresent()) {
             valueInCacheAction.action(valueFromCache);
@@ -42,13 +47,6 @@ public <V> ObservableFromCache<V> orElseGetObservable(String key) {
         return new ObservableFromCache<>(null, observableCache);
     }
 
-    public <V> ObservableFromCache<V> orElseGetObservable(String key, Class<V> observableClass) {
-        if (!isPresent()) {
-            return observableCache.getObservable(key, observableClass);
-        }
-        return new ObservableFromCache<>(null, observableCache);
-    }
-
     public <V> SingleFromCache<V> orElseGetSingle(String key) {
         if (!isPresent()) {
             return observableCache.getSingle(key);
@@ -56,13 +54,6 @@ public <V> SingleFromCache<V> orElseGetSingle(String key) {
         return new SingleFromCache<>(null, observableCache);
     }
 
-    public <V> SingleFromCache<V> orElseGetSingle(String key, Class<V> singleClass) {
-        if (!isPresent()) {
-            return observableCache.getSingle(key, singleClass);
-        }
-        return new SingleFromCache<>(null, observableCache);
-    }
-
     public CompletableFromCache orElseGetCompletable(String key) {
         if (!isPresent()) {
             return observableCache.getCompletable(key);
@@ -74,18 +65,10 @@ public <V> ObservableFromCache<V> thanGetObservable(String key) {
         return observableCache.getObservable(key);
     }
 
-    public <V> ObservableFromCache<V> thanGetObservable(String key, Class<V> observableClass) {
-        return observableCache.getObservable(key, observableClass);
-    }
-
     public <V> SingleFromCache<V> thanGetSingle(String key) {
         return observableCache.getSingle(key);
     }
 
-    public <V> SingleFromCache<V> thanGetSingle(String key, Class<V> singleClass) {
-        return observableCache.getSingle(key, singleClass);
-    }
-
     public CompletableFromCache thanGetCompletable(String key) {
         return observableCache.getCompletable(key);
     }