* @param <N> Node parameter type
 * @param <E> Edge parameter type
 */
@ElementTypesAreNonnullByDefault
final class StandardMutableNetwork<N, E> extends StandardNetwork<N, E>
    implements MutableNetwork<N, E> {

  /** Constructs a mutable graph with the properties specified in {@code builder}. */
  StandardMutableNetwork(NetworkBuilder<? super N, ? super E> builder) {
    super(builder);
  }

  @Override
  @CanIgnoreReturnValue

import java.util.Arrays;
import java.util.Collection;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;
import org.junit.runners.Parameterized.Parameters;

/** Tests for a directed {@link StandardMutableNetwork} allowing self-loops. */
@AndroidIncompatible
@RunWith(Parameterized.class)
public class StandardMutableDirectedNetworkTest extends AbstractStandardDirectedNetworkTest {

import java.util.Arrays;
import java.util.Collection;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;
import org.junit.runners.Parameterized.Parameters;

/** Tests for an undirected {@link StandardMutableNetwork}. */
@AndroidIncompatible
@RunWith(Parameterized.class)
public final class StandardMutableUndirectedNetworkTest
    extends AbstractStandardUndirectedNetworkTest {

import java.util.Arrays;
import java.util.Collection;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;
import org.junit.runners.Parameterized.Parameters;

/** Tests for a directed {@link StandardMutableNetwork} allowing self-loops. */
@AndroidIncompatible
@RunWith(Parameterized.class)
public class StandardMutableDirectedNetworkTest extends AbstractStandardDirectedNetworkTest {

  }

  /** Returns an empty {@link MutableNetwork} with the properties of this {@link NetworkBuilder}. */
  public <N1 extends N, E1 extends E> MutableNetwork<N1, E1> build() {
    return new StandardMutableNetwork<>(this);
  }

  @SuppressWarnings("unchecked")
  private <N1 extends N, E1 extends E> NetworkBuilder<N1, E1> cast() {
    return (NetworkBuilder<N1, E1>) this;
  }