containers: vectors of pairs not properly generated

Parser generates code for pairs and not for vectors for vectors of pairs. Example for std::vector<std::pair<int, X>>:

public class XPairVector extends Pointer {
    static { Loader.load(); }
    /** Pointer cast constructor. Invokes {@link Pointer#Pointer(Pointer)}. */
    public XPairVector(Pointer p) { super(p); }
    public XPairVector(int[] firstValue, X[] secondValue) { this(Math.min(firstValue.length, secondValue.length)); put(firstValue, secondValue); }
    public XPairVector()       { allocate();  }
    public XPairVector(long n) { allocate(n); }
    private native void allocate();
    private native void allocate(@Cast("size_t") long n);
    public native @Name("operator =") @ByRef XPairVector put(@ByRef XPairVector x);

    public boolean empty() { return size() == 0; }
    public native long size();
    public void clear() { resize(0); }
    public native void resize(@Cast("size_t") long n);

    @Index(function = "at") public native int first(@Cast("size_t") long i); public native XPairVector first(@Cast("size_t") long i, int first);
    @Index(function = "at") public native @ByRef X second(@Cast("size_t") long i);  public native XPairVector second(@Cast("size_t") long i, X second);

    public XPairVector put(int[] firstValue, X[] secondValue) {
        for (int i = 0; i < firstValue.length && i < secondValue.length; i++) {
            first(i, firstValue[i]);
            second(i, secondValue[i]);
        }
        return this;
    }
}

This is due to these lines. firstType and secondType being tested here for generating the code of pairs.

What about adding condition dim == 0 line 221 ? Or maybe removing condition indexType != null line 355 ?