Add getFragment to PdfView for more ease when using PdfView directly

android/src/main/java/com/pspdfkit/views/PdfView.java

@@ -11,6 +11,7 @@
 
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
+import androidx.fragment.app.Fragment;
 import androidx.fragment.app.FragmentManager;
 
 import com.facebook.react.bridge.ReadableMap;
@@ -70,6 +71,7 @@
 import io.reactivex.functions.Function;
 import io.reactivex.schedulers.Schedulers;
 import io.reactivex.subjects.BehaviorSubject;
+import io.reactivex.subjects.Subject;
 
 /**
  * This view displays a {@link com.pspdfkit.ui.PdfFragment} and all associated toolbars.
@@ -708,4 +710,9 @@ public Maybe<Boolean> setFormFieldValue(@NonNull String formElementName, @NonNul
                     return false;
                 });
     }
+
+    /** Returns the current fragment if it is set. */
+    public Maybe<PdfFragment> getFragment() {
+        return fragmentGetter.firstElement();
+    }
 }