boon/src/main/java/org/boon/collections/IntList.java
public int setInt(int index, int element) {
        int oldValue = values[index];
        values[index] = element;
        return oldValue;
    }
public int setInt(int index, int element) {
        int oldValue = values[index];
        values[index] = element;
        return oldValue;
    }
Set in a new value no wrapper

@param index   index
@param element new value
@return old value at this index