org.apache.http.impl.client
Classes 
AIMDBackoffManager
BasicAuthCache
BasicCookieStoreHC4
BasicCredentialsProviderHC4
BasicResponseHandlerHC4
CloseableHttpClient
DefaultBackoffStrategy
DefaultConnectionKeepAliveStrategyHC4
DefaultHttpRequestRetryHandlerHC4
DefaultRedirectStrategy
DefaultServiceUnavailableRetryStrategy
DefaultUserTokenHandlerHC4
EntityEnclosingRequestWrapperHC4
FutureRequestExecutionMetrics
FutureRequestExecutionService
HttpClientBuilder
HttpClients
HttpRequestFutureTask
LaxRedirectStrategy
NoopUserTokenHandler
NullBackoffStrategy
ProxyAuthenticationStrategy
ProxyClient
RedirectLocationsHC4
StandardHttpRequestRetryHandler
SystemDefaultCredentialsProvider
TargetAuthenticationStrategy