 the supplied key. Returns olm_error() on failure. If the key doesn't match the one used to encrypt the account then olm_account_last_error() will be &quot;BAD_ACCOUNT_KEY&quot;. If the base64 couldn't be decoded then olm_account_last_error() will be &quot;INVALID_BASE64&quot;. The input pickled buffer is destroyed</p></dd></dl><dl><dt class="spec value" id="val-unpickle_session"><a href="#val-unpickle_session" class="anchor"></a><code><span class="keyword">val</span> unpickle_session : <span><a href="../Ty