Return a new Jinja environment.

        Derived classes may override method to pass additional parameters or to change the template
        loader type.

def create_environment(self, **kwargs):
        """
        Return a new Jinja environment.

        Derived classes may override method to pass additional parameters or to change the template
        loader type.
        """
        environment = super().create_environment(**kwargs)
        environment.tests.update({
            'type': self.test_type,
            'kind': self.test_kind,
            'opposite_before_self': self.test_opposite_before_self,
        })
        environment.filters.update({
            'docstringline': self.filter_docstringline,
            'pyquotesingle': self.filter_pyquotesingle,
            'derivedname': self.filter_derived_name,
            'refqualifiers': self.filter_refqualifiers,
            'attrqualifiers': self.filter_attrqualifiers,
            'supertypes': self.filter_supertypes,
            'all_contents': self.filter_all_contents,
            'pyfqn': self.filter_pyfqn,
            're_sub': lambda v, p, r: re.sub(p, r, v),
            'set': self.filter_set,
        })

        from pyecore import ecore
        environment.globals.update({'ecore': ecore})

        return environment