package gregtech.common.events; import java.util.UUID; import org.jetbrains.annotations.NotNull; import cpw.mods.fml.common.eventhandler.Event; public abstract class BaseMetricsCoverEvent extends Event { protected final UUID frequency; public BaseMetricsCoverEvent(@NotNull UUID frequency) { this.frequency = frequency; } @NotNull public UUID getFrequency() { return frequency; } }