webdriver 0.47.0

Library implementing the wire protocol for the W3C WebDriver specification.
Documentation 
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/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

macro_rules! try_opt {
    ($expr:expr, $err_type:expr, $err_msg:expr) => {{
        match $expr {
            Some(x) => x,
            None => return Err(WebDriverError::new($err_type, $err_msg)),
        }
    }};
}