PeerConnectionFactory in Android Studio 2 has no methods

Question

After adding compile 'org.webrtc:google-webrtc:1.0.+' to my build.gradle file I try to init PeerConnectionFactory, but this class has no any useful methods.

What am I doing wrong?

UPDATE:

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Answer 1

The last version org.webrtc:google-webrtc:1.0.21217

You can init by following codes

PeerConnectionFactory.InitializationOptions.Builder optionBuilder = 
    PeerConnectionFactory.InitializationOptions.builder(/* Put context here */);
optionBuilder.setEnableInternalTracer(true);
optionBuilder.setFieldTrials("WebRTC-FlexFEC-03/Enabled/");
optionBuilder.setEnableVideoHwAcceleration(true);
PeerConnectionFactory.initialize(optionBuilder.createInitializationOptions());