codacy: a class which only has private constructors should be final

src/main/java/com/owncloud/android/authentication/PassCodeManager.java

@@ -37,7 +37,7 @@ import com.owncloud.android.utils.DeviceCredentialUtils;
 import java.util.HashSet;
 import java.util.Set;
 
-public class PassCodeManager {
+public final class PassCodeManager {
 
     private static final Set<Class> exemptOfPasscodeActivities;
 

src/main/java/com/owncloud/android/ui/fragment/util/FileDetailSharingFragmentHelper.java

@@ -30,7 +30,7 @@ import com.owncloud.android.lib.resources.status.OCCapability;
 /**
  * Helper calls for visibility logic of the sharing fragment.
  */
-public class FileDetailSharingFragmentHelper {
+public final class FileDetailSharingFragmentHelper {
     private FileDetailSharingFragmentHelper() {
         // Private empty constructor
     }

src/main/java/com/owncloud/android/utils/ClipboardUtil.java

@@ -32,7 +32,7 @@ import com.owncloud.android.lib.common.utils.Log_OC;
 /**
  * Helper implementation to copy a string into the system clipboard.
  */
-public class ClipboardUtil {
+public final class ClipboardUtil {
     private static final String TAG = ClipboardUtil.class.getName();
 
     private ClipboardUtil() {

src/main/java/com/owncloud/android/utils/DrawerMenuUtil.java

@@ -33,7 +33,7 @@ import com.owncloud.android.lib.resources.status.OwnCloudVersion;
 /**
  * A helper class for drawer menu related operations.
  */
-public class DrawerMenuUtil {
+public final class DrawerMenuUtil {
     private DrawerMenuUtil() {
     }