io.michaelrocks.libphonenumber.android.metadata.source.MapBackedMetadataContainer$KeyProvider -> j64:
# {"id":"sourceFile","fileName":"MapBackedMetadataContainer.java"}
    java.lang.Object getKeyOf(io.michaelrocks.libphonenumber.android.Phonemetadata$PhoneMetadata) -> a
      # {"id":"com.android.tools.r8.residualsignature","signature":"(Lqf5;)Ljava/lang/Object;"}
