### Question:
VSplitLayout extends VLayout { public Canvas getTopMember() { return top; } VSplitLayout(); static Builder buildVSplitLayout(); void setProportions(double proportion); Canvas getTopMember(); void setTopMember(Canvas member); Canvas getBottomMember(); void setBottomMember(Canvas member);  }### Answer:
@Test public void test_returnsNullIfNoTopMemberSet() { assertNull(vSplitLayout.getTopMember()); }