You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: nGridPointsWithLayers.m
    path of file: ./repos/VFIToolkit-matlab/SubCodes/MultiGridLayers
    
    the code of the file until where you have to start completion: function RequiredGridPoints=nGridPointsWithLayers(vfoptions)

OneLayer=vfoptions.refine_pts; % points per dimension per layer

if vfoptions.refine_iter==1
    RequiredGridPoints=OneLayer;
elseif vfoptions.refine_iter==2
    TwoLayers=1+(OneLayer-1).*(OneLayer-1)/2;

    
function RequiredGridPoints=nGridPointsWithLayers(vfoptions)

OneLayer=vfoptions.refine_pts; % points per dimension per layer

if vfoptions.refine_iter==1
    RequiredGridPoints=OneLayer;
elseif vfoptions.refine_iter==2
    TwoLayers=1+(OneLayer-1).*(OneLayer-1)/2;
    RequiredGridPoints=TwoLayers;
elseif vfoptions.refine_iter==3
    TwoLayers=1+(OneLayer-1).*(OneLayer-1)/2;
    ThreeLayers=1+(TwoLayers-1).*(OneLayer-1)/2;
    RequiredGridPoints=ThreeLayers;
elseif vfoptions.refine_iter==4
    TwoLayers=1+(OneLayer-1).*(OneLayer-1)/2;
    ThreeLayers=1+(TwoLayers-1).*(OneLayer-1)/2;
    FourLayers=1+(ThreeLayers-1).*(OneLayer-1)/2;
    RequiredGridPoints=FourLayers;
else
    error('Max of four layers (for value function refinement2)')
end