def passport_owner(self, gender: SexLiteral = "X") -> Tuple[str, str]:
        """Generate a given_name and surname for a passport owner
        The ``gender`` argument is the gender marker of a passport owner, which is a one character string
        that is either male, female, or non-binary.
        """
        if gender == "M":
            given_name = self.generator.parse("{{first_name_male}}")
        elif gender == "F":
            given_name = self.generator.parse("{{first_name_female}}")
        else:
            given_name = self.generator.parse("{{first_name_nonbinary}}")

        surname = self.generator.parse("{{last_name}}")

        return given_name, surname
Generate a given_name and surname for a passport owner
        The ``gender`` argument is the gender marker of a passport owner, which is a one character string
        that is either male, female, or non-binary.
        
faker/providers/passport/__init__.py