hold = function (selector) {
    return this.element(selector).then((res) => {
        /**
         * check if element was found and throw error if not
         */
        if (!res.value) {
            throw new RuntimeError(7)
        }

        return this.touchLongClick(res.value.ELEMENT)
    })
}
Long press on an element using finger motion events. This command works only in a
mobile context.

@alias browser.hold
@param {String} selector element to hold on
@uses protocol/element, protocol/touchLongClick
@type mobile