* graphs. Instances of this class should be constructed with {@link GraphBuilder}.
 *
 * <p>Time complexities for mutation methods are all O(1) except for {@code removeNode(N node)},
 * which is in O(d_node) where d_node is the degree of {@code node}.
 *
 * @author James Sexton
 * @param <N> Node parameter type
 */
final class StandardMutableGraph<N> extends ForwardingGraph<N> implements MutableGraph<N> {

        assertThat(network.outEdges(node)).isEqualTo(network.incidentEdges(node));
        assertThat(network.inDegree(node)).isEqualTo(network.degree(node));
        assertThat(network.outDegree(node)).isEqualTo(network.degree(node));
      }

      for (N otherNode : network.nodes()) {
        Set<E> edgesConnecting = sanityCheckSet(network.edgesConnecting(node, otherNode));

    putEdge(N1, N1);
    assertThat(graph.degree(N1)).isEqualTo(2);
    putEdge(N1, N2);
    assertThat(graph.degree(N1)).isEqualTo(3);
  }

  @Test
  public void inDegree_selfLoop() {
    assume().that(graph.allowsSelfLoops()).isTrue();

    putEdge(N1, N1);
    assertThat(graph.inDegree(N1)).isEqualTo(2);
    putEdge(N1, N2);
    assertThat(graph.inDegree(N1)).isEqualTo(3);
  }

  @Test

    assertThat(network.degree(N1)).isEqualTo(2);
    addEdge(N1, N2, E12);
    assertThat(network.degree(N1)).isEqualTo(3);
  }

  @Test
  public void inDegree_selfLoop() {
    assume().that(network.allowsSelfLoops()).isTrue();

    addEdge(N1, N1, E11);
    assertThat(network.inDegree(N1)).isEqualTo(1);
    addEdge(N4, N1, E41);
    assertThat(network.inDegree(N1)).isEqualTo(2);
  }

  @Test

    assertThat(network.degree(N1)).isEqualTo(2);
    addEdge(N1, N2, E12);
    assertThat(network.degree(N1)).isEqualTo(3);
  }

  @Test
  public void inDegree_selfLoop() {
    assume().that(network.allowsSelfLoops()).isTrue();

    addEdge(N1, N1, E11);
    assertThat(network.inDegree(N1)).isEqualTo(1);
    addEdge(N4, N1, E41);
    assertThat(network.inDegree(N1)).isEqualTo(2);
  }

  @Test

    assertThat(network.degree(N1)).isEqualTo(2);
    addEdge(N1, N2, E12);
    assertThat(network.degree(N1)).isEqualTo(3);
  }

  @Test
  public void inDegree_selfLoop() {
    assume().that(network.allowsSelfLoops()).isTrue();

    addEdge(N1, N1, E11);
    assertThat(network.inDegree(N1)).isEqualTo(2);
    addEdge(N1, N2, E12);
    assertThat(network.inDegree(N1)).isEqualTo(3);
  }

  @Test

// https://www.iana.org/domains/root/db/dealer.html
dealer

// deals : Binky Moon, LLC
// https://www.iana.org/domains/root/db/deals.html
deals

// degree : Dog Beach, LLC
// https://www.iana.org/domains/root/db/degree.html
degree

// delivery : Binky Moon, LLC
// https://www.iana.org/domains/root/db/delivery.html
delivery

// dell : Dell Inc.

sin
dem
oss
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eller
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skal
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her
alle
vil
bli
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inn
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kom
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dere
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ja
etter
ned
skulle
denne
for
deg
si
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mot
å
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disse
uten
hvordan
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din
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blir
samme
hvilken

de.cool
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delta
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demo.datadetect.com
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democracia.bo
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00AE          ; valid                  ;      ; NV8    # 1.1  REGISTERED SIGN
00AF          ; disallowed_STD3_mapped ; 0020 0304     # 1.1  MACRON
00B0..00B1    ; valid                  ;      ; NV8    # 1.1  DEGREE SIGN..PLUS-MINUS SIGN
00B2          ; mapped                 ; 0032          # 1.1  SUPERSCRIPT TWO
00B3          ; mapped                 ; 0033          # 1.1  SUPERSCRIPT THREE