non-null `TlsVersion`. Cache responses persisted prior to OkHttp 3.0 did not
    store a TLS version; for these unknown values the handshake is defaulted to
    `TlsVersion.SSL_3_0`.

 *  New: Upgrade to Okio 1.13.0.

     ```xml
     <dependency>
       <groupId>com.squareup.okio</groupId>
       <artifactId>okio</artifactId>
       <version>1.13.0</version>
     </dependency>

	public fun toString ()Ljava/lang/String;
}

public final class okhttp3/TlsVersion : java/lang/Enum {
	public static final field Companion Lokhttp3/TlsVersion$Companion;
	public static final field SSL_3_0 Lokhttp3/TlsVersion;
	public static final field TLS_1_0 Lokhttp3/TlsVersion;
	public static final field TLS_1_1 Lokhttp3/TlsVersion;
	public static final field TLS_1_2 Lokhttp3/TlsVersion;