> +import java.util.Set;
> +
> +import static com.google.common.base.Preconditions.checkNotNull;
> +
> +/**
> + * @author Andrea Turli
> + */
> +public class ExposedPorts {
> +
> + private final String portAndProtocol;
> + private final Set<String> hostPorts;
> +
> + @ConstructorProperties({ "PortAndProtocol", "HostPorts" })
> + public ExposedPorts(String portAndProtocol, Set<String> hostPorts) {
> + this.portAndProtocol = checkNotNull(portAndProtocol,
> "portAndProtocol");
> + this.hostPorts = hostPorts != null ? ImmutableSet.copyOf(hostPorts) :
> ImmutableSet.<String> of();
If `hostPorts` can be null, annotate it as `@Nullable`, otherwise add a null
check.
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