missing constant

String const missing

Implementation

static const String missing =
    '<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width="512" height="512" preserveAspectRatio="xMidYMid meet" viewBox="0 0 512 512"><path fill="currentColor" d="M499.5 385.4 308.9 57.2c-31.8-52.9-74.1-52.9-105.9 0L12.5 385.4c-31.8 52.9 0 95.3 63.5 95.3h360c63.5 0 95.3-42.4 63.5-95.3zm-201.1 52.9h-84.7v-84.7h84.7v84.7zm0-127h-84.7V120.7h84.7v190.6z"/></svg>';