google-material-design-icons/android/file/topic/materialicons/black/res/drawable/baseline_topic_24.xml

<vector xmlns:android="http://schemas.android.com/apk/res/android"
    android:width="24dp"
    android:height="24dp"
    android:viewportWidth="24"
    android:viewportHeight="24"
    android:tint="?attr/colorControlNormal">
  <path
      android:fillColor="@android:color/white"
      android:pathData="M20,6h-8l-2,-2H4C2.9,4 2.01,4.9 2.01,6L2,18c0,1.1 0.9,2 2,2h16c1.1,0 2,-0.9 2,-2V8C22,6.9 21.1,6 20,6zM14,16H6v-2h8V16zM18,12H6v-2h12V12z"/>
</vector>