1# Preserve class methods (that we explicitly register in native code), if the class is preserved 2-keepclassmembers class androidx.tracing.perfetto.jni.PerfettoNative { 3 java.lang.String nativeVersion(); 4 void nativeRegisterWithPerfetto(); 5 void nativeTraceEventBegin(int, java.lang.String); 6 void nativeTraceEventEnd(); 7}