Method out

chapter20/src/main/java/com/seaofnodes/simple/node/Node.java:138–138

(int i)

        while( nIns() <= idx ) addDef(null);
        return setDef(idx,new_def);
    }

    // Remove the numbered input, compressing the inputs in-place.  This
    // shuffles the order deterministically - which is suitable for Region and