add constant

String const add

Implementation

static const String add =
    '<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width="2048" height="2048" preserveAspectRatio="xMidYMid meet" viewBox="0 0 2048 2048"><path fill="currentColor" d="M2048 960v128h-960v960H960v-960H0V960h960V0h128v960h960z"/></svg>';