title: Duplicate class org.xmlpull.v1.XmlPullParser Android
body: <p>i have a hudge problem while integrating a new library on Android App.</p>
  <p>When i tried to <code>implementation 'br.com.stone:stone-sdk:3.8.2'</code> on Gradle (app module) and sync project, android shows a new issue</p>
  <pre><code>Duplicate class org.xmlpull.v1.XmlPullParser found in modules jetified-ksoap2-android-assembly-3.0.0-jar-with-dependencies.jar (ksoap2-android-assembly-3.0.0-jar-with-dependencies.jar) and jetified-xpp3_min-1.1.4c.jar (xpp3:xpp3_min:1.1.4c)
  Duplicate class org.xmlpull.v1.XmlPullParserException found in modules jetified-ksoap2-android-assembly-3.0.0-jar-with-dependencies.jar (ksoap2-android-assembly-3.0.0-jar-with-dependencies.jar) and jetified-xpp3_min-1.1.4c.jar (xpp3:xpp3_min:1.1.4c)
  </code></pre>
  <p>Perhaps implementation files('libs/ksoap2-android-assembly-3.0.0-jar-with-dependencies.jar') has already the same Class.</p>
  <p>Can anynone help me solving this problem?</p>