function m = lm_getPSTEventMatrix(mapping)
    m = [];
    size(mapping.LabelToCondition.keySet)
    for key = 1:size(mapping.LabelToCondition.keySet)
        label = mapping.LabelToCondition.keySet.toArray;
        label = label(key);
        m = [m ; lm_getCondition(mapping,label)];
    end
end