android/action/unfold_more_double/materialiconstwotone/black/res/drawable/twotone_unfold_more_double_20.xml

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    android:height="20dp"
    android:viewportWidth="20"
    android:viewportHeight="20"
    android:tint="?attr/colorControlNormal">
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      android:fillColor="@android:color/white"
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      android:fillColor="@android:color/white"
      android:pathData="M6.63,3.37l1.06,1.06l2.31,-2.31l2.31,2.31l1.06,-1.06l-3.37,-3.37z"/>
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      android:fillColor="@android:color/white"
      android:pathData="M13.37,16.63l-1.06,-1.06l-2.31,2.31l-2.31,-2.31l-1.06,1.06l3.37,3.37z"/>
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      android:fillColor="@android:color/white"
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</vector>