[BUG] Templates are messing everything up!!

I have the following code.

``` cpp
namespace godot {

class Vertex : public Reference {
GODOT_CLASS(Vertex, Reference);

public:
void _init() {}
static void _register_methods() {}

Vertex() { Godot::print("Construct"); }
~Vertex() { Godot::print("Destruct"); }
};

class ListDigraph : public Reference {
GODOT_CLASS(ListDigraph, Reference);

public:
template
Ref __add_vertex() {
return Ref::__internal_constructor(T::_new());
}

virtual Ref add_vertex() { return __add_vertex(); }

void _init() {}
static void _register_methods() {}

ListDigraph() {}
~ListDigraph() {}
};

/////////////////////////////////////////////////////////////////////////

class PropertyVertex : public Vertex {
GODOT_SUBCLASS(PropertyVertex, Vertex);

public:
void _init() {}
static void _register_methods() {}

PropertyVertex() {}
~PropertyVertex() {}
};

class PropertyGraph : public ListDigraph {
GODOT_SUBCLASS(PropertyGraph, ListDigraph);

public:
Ref add_vertex() override { return __add_vertex(); }

void _init() {}
static void _register_methods() {}

PropertyGraph() {}
~PropertyGraph() {}
};

}
```

Code compiles OK the problem is in the GDScript API:

```python
var g = ListDigraph.new()
print(g.add_vertex())

# Oututs
#Construct
#[Reference:1137]
#Destruct

var p = PropertyGraph.new()
print(p.add_vertex())

# Oututs
#[Reference:1140]
```

even though "PropertyVertex" is a "Vertex" its construct and destruct code are not printed.