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: angularVelocityVector.m
    path of file: ./repos/mtex/TensorAnalysis/@velocityGradientTensor
    
    the code of the file until where you have to start completion: function omega = angularVelocityVector(L)

    
function omega = angularVelocityVector(L)
% angular velocity vector omega


omega = -0.5 .* vector3d(EinsteinSum(tensor.leviCivita,[1 -1 -2],L,[-1 -2]));

% result should be Miller if transformation is in crystal coordinates
if isa(L.CS,'crystalSymmetry'), omega = Miller(omega,L.CS); end