Small refactoring of ForwardWrapperBase.generate_body to allow the generate_call() virtual method to add new parse parameters that were not previously declared.
Small refactoring of ForwardWrapperBase.generate_body to allow the generate_call() virtual method to add new parse parameters that were not previously declared.

caramucho/pybindgen,cawka/pybindgen,cawka/pybindgen,cawka/pybindgen,cawka/pybindgen,caramucho/pybindgen,caramucho/pybindgen,caramucho/pybindgen