Constructor missing in Swig4.0 new std_vector.i ?

Hi,

I am using Swig to wrap a C++ library with Java.

With Swig3.0, I used to write
%template(MyClass) vector<namespace::EnumType>;
and that's all. A fully functional MyClass was created.

Using Swig4.0, compilation still works but I lack the simple constructor
vector(size_type n);

Indeed, comparing std_vector.i files make appear this constructor is no
longer present in Swig4.0:
Swig3.0 std_vector.i  (extract)
      vector();
      vector(size_type n);
      size_type size() const;
      size_type capacity() const;

Swig4.0 std_vector.i  (extract)
      vector();
      vector(const vector &other);

      size_type capacity() const;

I probably miss something but reading the documentation doesn't really help
me (I'm not very familiar with C++, nor Swig).

Any hint to solve this problem would be really appreciated. And a solution
that works for both Swig 4.0 and Swig 3.0 would be ideal (I work with
people that still use Swig 3.0)

In advance, Thanks for any help.

jMax

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