<description>
            The URL of the project's download page. If not given users will be
            referred to the homepage given by {@code url}.
            This is given to assist in locating artifacts that are not in the repository due to
            licensing restrictions.
          </description>
          <type>String</type>
        </field>
        <field>

      client
        .newBuilder()
        .protocols(Arrays.asList(Protocol.HTTP_1_1))
        .build()
    assertContent("A", getResponse(newRequest("/")))
  }

  @Test
  fun setProtocolsWithoutHttp11() {
    assertFailsWith<IllegalArgumentException> {
      OkHttpClient
        .Builder()
        .protocols(Arrays.asList(Protocol.HTTP_2))
    }
  }

  @Test

            }
        }

        private List<V> asList() {
            if (list == null) {
                list = new ArrayList<>(map.values());
                map = null;
            }
            return list;
        }

        @Override
        public void add(int index, V element) {
            asList().add(index, element);
        }

        @Override

import static com.google.common.base.Preconditions.checkNotNull;
import static com.google.common.base.Preconditions.checkState;
import static com.google.common.base.Throwables.throwIfUnchecked;
import static com.google.common.collect.Lists.asList;
import static com.google.common.collect.Sets.newConcurrentHashSet;
import static com.google.common.util.concurrent.ClosingFuture.Status.CLOSED;
import static com.google.common.util.concurrent.ClosingFuture.Status.CLOSING;