fun headersBuilder() {
    var builder: Headers.Builder = Headers.Builder()
    builder = builder.add("")
    builder = builder.add("", "")
    builder = builder.addUnsafeNonAscii("", "")
    builder = builder.addAll(headersOf())
    builder = builder.add("", Date(0L))
    builder = builder.add("", Instant.EPOCH)
    builder = builder.set("", "")
    builder = builder.set("", Date(0L))
    builder = builder.set("", Instant.EPOCH)

      for (int i = 0; i < VALUES.length; i++) {
        List<Float> list = Floats.asList(VALUES).subList(0, i);
        Collection<Float> misleadingSize = Helpers.misleadingSizeCollection(delta);
        misleadingSize.addAll(list);
        float[] arr = Floats.toArray(misleadingSize);
        assertThat(arr.length).isEqualTo(i);
        for (int j = 0; j < i; j++) {
          assertThat(arr[j]).isEqualTo(VALUES[j]);
        }
      }

      for (int i = 0; i < VALUES.length; i++) {
        List<Integer> list = Ints.asList(VALUES).subList(0, i);
        Collection<Integer> misleadingSize = Helpers.misleadingSizeCollection(delta);
        misleadingSize.addAll(list);
        int[] arr = Ints.toArray(misleadingSize);
        assertThat(arr).hasLength(i);
        for (int j = 0; j < i; j++) {
          assertThat(arr[j]).isEqualTo(VALUES[j]);
        }
      }
    }

      for (int i = 0; i < VALUES.length; i++) {
        List<Float> list = Floats.asList(VALUES).subList(0, i);
        Collection<Float> misleadingSize = Helpers.misleadingSizeCollection(delta);
        misleadingSize.addAll(list);
        float[] arr = Floats.toArray(misleadingSize);
        assertThat(arr.length).isEqualTo(i);
        for (int j = 0; j < i; j++) {
          assertThat(arr[j]).isEqualTo(VALUES[j]);
        }
      }

			newAcc := &AccElem{}
			old := e.cached.Swap(newAcc)
			var a AccElem
			a.Size = atomic.LoadInt64(&old.Size)
			a.Total = atomic.LoadInt64(&old.Total)
			a.N = atomic.LoadInt64(&old.N)
			e.mu.Lock()
			e.addAll(t-1, a)
			e.mu.Unlock()
			acc = newAcc
		} else {
			// We may be able to grab the new accumulator by yielding.
			runtime.Gosched()
			acc = e.cached.Load()
		}
	}
	atomic.AddInt64(&acc.N, 1)

    } catch (UnsupportedOperationException | NullPointerException e) {
      // Expected.
    }
    assertInvariants(map);

    try {
      entrySet.addAll(singleton((Entry<K, V>) entryToAdd));
      fail("Expected UnsupportedOperationException or NullPointerException.");
    } catch (UnsupportedOperationException | NullPointerException e) {
      // Expected.
    }

      }

      @Override
      public boolean add(@ParametricNullness E element) {
        throw new UnsupportedOperationException();
      }

      @Override
      public boolean addAll(Collection<? extends E> es) {
        throw new UnsupportedOperationException();
      }
    };
  }

  private static <E extends @Nullable Object> SortedSet<E> removeOnlySortedSet(SortedSet<E> set) {

      }

      @Override
      public boolean add(@ParametricNullness E element) {
        throw new UnsupportedOperationException();
      }

      @Override
      public boolean addAll(Collection<? extends E> es) {
        throw new UnsupportedOperationException();
      }
    };
  }

  private static <E extends @Nullable Object> SortedSet<E> removeOnlySortedSet(SortedSet<E> set) {

      @Nullable Collection<IOException> exceptions, @Nullable Collection<IOException> other) {
    if (exceptions == null) {
      return other;
    } else if (other != null) {
      exceptions.addAll(other);
    }
    return exceptions;
  }

  /**
   * Throws an exception indicating that one or more files couldn't be deleted when deleting {@code
   * path} or its contents.
   *

	if err := DB.Where("name = ?", "find").Find(&all).Error; err != nil || len(all) != 3 {
		t.Errorf("errors happened when query find: %v, length: %v", err, len(all))
	} else {
		for idx, user := range users {
			t.Run("FindAll#"+strconv.Itoa(idx+1), func(t *testing.T) {
				CheckUser(t, all[idx], user)
			})
		}
	}

	t.Run("FirstMap", func(t *testing.T) {
		first := map[string]interface{}{}