*
 * <p>See the Guava User Guide article on <a href=
 * "https://github.com/google/guava/wiki/CollectionUtilitiesExplained#tables">{@code Tables}</a>.
 *
 * @author Jared Levy
 * @author Louis Wasserman
 * @since 7.0
 */
@GwtCompatible
@ElementTypesAreNonnullByDefault
public final class Tables {
  private Tables() {}

  /**
   * Returns a {@link Collector} that accumulates elements into a {@code Table} created using the

        .addEqualityGroup(entry, Tables.immutableCell("foo", 1, 'a'))
        .addEqualityGroup(Tables.immutableCell("bar", 1, 'a'))
        .addEqualityGroup(Tables.immutableCell("foo", 2, 'a'))
        .addEqualityGroup(Tables.immutableCell("foo", 1, 'b'))
        .addEqualityGroup(
            Tables.<@Nullable Object, @Nullable Object, @Nullable Object>immutableCell(
                null, null, null))
        .testEquals();
  }

        .addEqualityGroup(entry, Tables.immutableCell("foo", 1, 'a'))
        .addEqualityGroup(Tables.immutableCell("bar", 1, 'a'))
        .addEqualityGroup(Tables.immutableCell("foo", 2, 'a'))
        .addEqualityGroup(Tables.immutableCell("foo", 1, 'b'))
        .addEqualityGroup(
            Tables.<@Nullable Object, @Nullable Object, @Nullable Object>immutableCell(
                null, null, null))
        .testEquals();
  }

}


def generate_encoders_by_class_tuples(
    type_encoder_map: Dict[Any, Callable[[Any], Any]],
) -> Dict[Callable[[Any], Any], Tuple[Any, ...]]:
    encoders_by_class_tuples: Dict[Callable[[Any], Any], Tuple[Any, ...]] = defaultdict(
        tuple
    )
    for type_, encoder in type_encoder_map.items():
        encoders_by_class_tuples[encoder] += (type_,)
    return encoders_by_class_tuples

    Table<String, Integer, Character> table = Tables.transpose(original);
    table.clear();
    populate(table, data);
    return table;
  }

  public void testTransposeTransposed() {
    Table<Integer, String, Character> original = HashBasedTable.create();
    assertSame(original, Tables.transpose(Tables.transpose(original)));
  }

  public void testPutOriginalModifiesTranspose() {

    Table<String, Integer, Character> table = Tables.transpose(original);
    table.clear();
    populate(table, data);
    return table;
  }

  public void testTransposeTransposed() {
    Table<Integer, String, Character> original = HashBasedTable.create();
    assertSame(original, Tables.transpose(Tables.transpose(original)));
  }

  public void testPutOriginalModifiesTranspose() {

    return Tables.immutableCell(
        checkNotNull(rowKey, "rowKey"),
        checkNotNull(columnKey, "columnKey"),
        checkNotNull(value, "value"));
  }

  /**
   * A builder for creating immutable table instances, especially {@code public static final} tables
   * ("constant tables"). Example:
   *
   * <pre>{@code

import com.google.common.base.Supplier;
import java.util.Map;
import java.util.TreeMap;
import org.checkerframework.checker.nullness.qual.Nullable;

/**
 * Test cases for {@link Tables#newCustomTable}.
 *
 * @author Jared Levy
 */
@GwtCompatible
@ElementTypesAreNonnullByDefault
public class NewCustomTableTest extends AbstractTableTest<Character> {

  @Override

    CollectorTester.of(collector)
        .expectCollects(ImmutableTable.of())
        .expectCollects(
            ImmutableTable.of("one", "uno", 3),
            Tables.immutableCell("one", "uno", 1),
            Tables.immutableCell("one", "uno", 2));
  }

  public void testBuilder() {
    ImmutableTable.Builder<Character, Integer, String> builder = new ImmutableTable.Builder<>();

import com.google.common.base.Supplier;
import java.util.Map;
import java.util.TreeMap;
import org.checkerframework.checker.nullness.qual.Nullable;

/**
 * Test cases for {@link Tables#newCustomTable}.
 *
 * @author Jared Levy
 */
@GwtCompatible
@ElementTypesAreNonnullByDefault
public class NewCustomTableTest extends AbstractTableTest<Character> {

  @Override