google-material-design-icons/android/content/add/materialicons/black/res/drawable/baseline_add_20.xml

<vector xmlns:android="http://schemas.android.com/apk/res/android"
    android:width="20dp"
    android:height="20dp"
    android:viewportWidth="20"
    android:viewportHeight="20"
    android:tint="?attr/colorControlNormal">
  <path
      android:fillColor="@android:color/white"
      android:pathData="M16,11h-5v5H9v-5H4V9h5V4h2v5h5z"/>
</vector>