Factor NickProvider in extra file and fill under correct package

smack-extensions/src/main/java/org/jivesoftware/smackx/nick/packet/Nick.java

@@ -16,16 +16,10 @@
  */
 package org.jivesoftware.smackx.nick.packet;
 
-import java.io.IOException;
-
 import org.jivesoftware.smack.packet.ExtensionElement;
-import org.jivesoftware.smack.provider.ExtensionElementProvider;
 import org.jivesoftware.smack.util.StringUtils;
 import org.jivesoftware.smack.util.XmlStringBuilder;
 
-import org.xmlpull.v1.XmlPullParser;
-import org.xmlpull.v1.XmlPullParserException;
-
 /**
  * A minimalistic implementation of a {@link ExtensionElement} for nicknames.
  *
@@ -73,15 +67,4 @@ public class Nick implements ExtensionElement {
         xml.closeElement(this);
         return xml;
     }
-
-    public static class Provider extends ExtensionElementProvider<Nick> {
-
-        @Override
-        public Nick parse(XmlPullParser parser, int initialDepth)
-                        throws XmlPullParserException, IOException {
-            final String name = parser.nextText();
-
-            return new Nick(name);
-        }
-    }
 }

smack-extensions/src/main/java/org/jivesoftware/smackx/nick/provider/NickProvider.java

@@ -0,0 +1,37 @@
+/**
+ *
+ * Copyright 2003-2007 Jive Software, 2018 Florian Schmaus.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.jivesoftware.smackx.nick.provider;
+
+import java.io.IOException;
+
+import org.jivesoftware.smack.provider.ExtensionElementProvider;
+
+import org.jivesoftware.smackx.nick.packet.Nick;
+
+import org.xmlpull.v1.XmlPullParser;
+import org.xmlpull.v1.XmlPullParserException;
+
+public class NickProvider extends ExtensionElementProvider<Nick> {
+
+    @Override
+    public Nick parse(XmlPullParser parser, int initialDepth) throws XmlPullParserException, IOException {
+        String name = parser.nextText();
+
+        return new Nick(name);
+    }
+
+}

smack-extensions/src/main/java/org/jivesoftware/smackx/nick/provider/package-info.java

@@ -0,0 +1,21 @@
+/**
+ *
+ * Copyright 2018 Florian Schmaus
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * Providers for XEP-0172: User Nickname.
+ */
+package org.jivesoftware.smackx.nick.provider;

smack-extensions/src/main/resources/org.jivesoftware.smack.extensions/extensions.providers

@@ -411,7 +411,7 @@
     <extensionProvider>
         <elementName>nick</elementName>
         <namespace>http://jabber.org/protocol/nick</namespace>
-        <className>org.jivesoftware.smackx.nick.packet.Nick$Provider</className>
+        <className>org.jivesoftware.smackx.nick.provider.NickProvider</className>
     </extensionProvider>
 
     <!-- Attention -->