CameraKit (Support Media Picker)
· Provides Snap's implementation of the MediaProcessor Source which reads media files from the device MediaStore for the CameraKit SDK.
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 support-media-picker-source-1.26.0.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.