* this class rather than implement {@link Network} directly.
 *
 * <p>The methods implemented in this class should not be overridden unless the subclass admits a
 * more efficient implementation.
 *
 * @author James Sexton
 * @param <N> Node parameter type
 * @param <E> Edge parameter type
 * @since 20.0
 */
@Beta
@ElementTypesAreNonnullByDefault
public abstract class AbstractNetwork<N, E> implements Network<N, E> {
  @Override

import java.util.Set;
import java.util.concurrent.atomic.AtomicBoolean;
import javax.annotation.CheckForNull;

/**
 * An implementation of {@link GraphConnections} for directed graphs.
 *
 * @author James Sexton
 * @author Jens Nyman
 * @param <N> Node parameter type
 * @param <V> Value parameter type
 */
@ElementTypesAreNonnullByDefault
final class DirectedGraphConnections<N, V> implements GraphConnections<N, V> {
  /**

import java.util.Map;
import java.util.Set;
import javax.annotation.CheckForNull;

/**
 * Static utility methods for {@link Graph}, {@link ValueGraph}, and {@link Network} instances.
 *
 * @author James Sexton
 * @author Joshua O'Madadhain
 * @since 20.0
 */
@Beta
@ElementTypesAreNonnullByDefault
public final class Graphs extends GraphsBridgeMethods {

  private Graphs() {}

  // Graph query methods

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AA77..AA79    ; valid                  ;      ; NV8    # 5.2  MYANMAR SYMBOL AITON EXCLAMATION..MYANMAR SYMBOL AITON TWO
AA7A..AA7B    ; valid                                  # 5.2  MYANMAR LETTER AITON RA..MYANMAR SIGN PAO KAREN TONE
AA7C..AA7F    ; valid                                  # 7.0  MYANMAR SIGN TAI LAING TONE-2..MYANMAR LETTER SHWE PALAUNG SHA