core-gms-full
· Webex Connect Android SDK provides a messaging framework that enables app developers to embed bidirectional in-app messaging and interactive push notifications capabilities within their mobile applications.
Download JD-GUI to open JAR file and explore Java source code file (.class .java)
Click menu "File → Open File..." or just drag-and-drop the JAR file in the JD-GUI window core-gms-full-2.19.0.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.