Fixing out checkstyle issues

Author: TikhomirovSergey

src/main/java/io/appium/java_client/android/connection/ConnectionState.java

@@ -32,20 +32,26 @@ public ConnectionState(long bitMask) {
     }
 
     /**
+     * Is airplane mode enabled or not.
+     *
      * @return true if airplane mode is enabled.
      */
     public boolean isAirplaneModeEnabled() {
         return (bitMask & AIRPLANE_MODE_MASK) != 0;
     }
 
     /**
+     * Is Wi-Fi connection enabled or not.
+     *
      * @return true if Wi-Fi connection is enabled.
      */
     public boolean isWiFiEnabled() {
         return (bitMask & WIFI_MASK) != 0;
     }
 
     /**
+     * Is data connection enabled or not.
+     *
      * @return true if data connection is enabled.
      */
     public boolean isDataEnabled() {

src/main/java/io/appium/java_client/ios/HasIOSClipboard.java

@@ -48,7 +48,7 @@ default void setClipboardImage(BufferedImage img) throws IOException {
     }
 
     /**
-     * Get an image from the clipboard
+     * Get an image from the clipboard.
      *
      * @return the actual image instance.
      * @throws IOException If the returned image cannot be decoded or if the clipboard is empty.
@@ -72,7 +72,7 @@ default void setClipboardUrl(URL url) {
     }
 
     /**
-     * Get an URL from the clipboard
+     * Get an URL from the clipboard.
      *
      * @return the actual URL instance.
      * @throws MalformedURLException if the URL in the clipboard is not valid or if the clipboard is empty.

src/main/java/io/appium/java_client/ws/CanHandleConnects.java

@@ -21,6 +21,8 @@
 public interface CanHandleConnects {
 
     /**
+     * Returns a list of all registered web socket connection handlers.
+     *
      * @return The list of web socket connection handlers.
      */
     List<Runnable> getConnectionHandlers();

src/main/java/io/appium/java_client/ws/CanHandleDisconnects.java

@@ -21,6 +21,8 @@
 public interface CanHandleDisconnects {
 
     /**
+     * Returns a list of all registered web socket disconnection handlers.
+     *
      * @return The list of web socket disconnection handlers.
      */
     List<Runnable> getDisconnectionHandlers();

src/main/java/io/appium/java_client/ws/CanHandleErrors.java

@@ -22,6 +22,8 @@
 public interface CanHandleErrors {
 
     /**
+     * Returns a list of all registered web socket error handlers.
+     *
      * @return The list of web socket error handlers.
      */
     List<Consumer<Throwable>> getErrorHandlers();

src/main/java/io/appium/java_client/ws/CanHandleMessages.java

@@ -21,6 +21,8 @@
 
 public interface CanHandleMessages<T> {
     /**
+     * Returns a list of all registered web socket messages handlers.
+     *
      * @return The list of web socket message handlers.
      */
     List<Consumer<T>> getMessageHandlers();

src/main/java/io/appium/java_client/ws/StringWebSocketClient.java

@@ -104,33 +104,21 @@ public void onMessage(String message) {
         getMessageHandlers().forEach(x -> x.accept(message));
     }
 
-    /**
-     * @return The list of all registered web socket messages handlers.
-     */
     @Override
     public List<Consumer<String>> getMessageHandlers() {
         return messageHandlers;
     }
 
-    /**
-     * @return The list of all registered web socket error handlers.
-     */
     @Override
     public List<Consumer<Throwable>> getErrorHandlers() {
         return errorHandlers;
     }
 
-    /**
-     * @return The list of all registered web socket connection handlers.
-     */
     @Override
     public List<Runnable> getConnectionHandlers() {
         return connectHandlers;
     }
 
-    /**
-     * @return The list of all registered web socket disconnection handlers.
-     */
     @Override
     public List<Runnable> getDisconnectionHandlers() {
         return disconnectHandlers;