How to use the snowballstemmer.turkish_stemmer.TurkishStemmer function in snowballstemmer

raise lab21()
                        self.cursor -= 1
                except lab22: pass
                raise lab2()
            except lab21: pass
            self.cursor = self.limit - v_3
            # (, line 123
            # literal, line 123
            if not self.eq_s_b(1, u"\u00FC"):
                return False
            # goto, line 123
            try:
                while True:
                    v_11 = self.limit - self.cursor
                    try:
                        if not self.in_grouping_b(TurkishStemmer.g_vowel6, 246, 252):
                            raise lab25()
                        self.cursor = self.limit - v_11
                        raise lab24()
                    except lab25: pass
                    self.cursor = self.limit - v_11
                    if self.cursor <= self.limit_backward:
                        return False
                    self.cursor -= 1
            except lab24: pass
        except lab2: pass
        self.cursor = self.limit - v_1
        return True

def r_mark_lAr(self):
        # (, line 267
        # call check_vowel_harmony, line 268
        if not self.r_check_vowel_harmony():
            return False
        # among, line 269
        if self.find_among_b(TurkishStemmer.a_16, 2) == 0:
            return False
        return True

def r_mark_ndA(self):
        # (, line 215
        # call check_vowel_harmony, line 216
        if not self.r_check_vowel_harmony():
            return False
        # among, line 217
        if self.find_among_b(TurkishStemmer.a_7, 2) == 0:
            return False
        return True

def r_mark_sUnUz(self):
        # (, line 263
        # among, line 264
        if self.find_among_b(TurkishStemmer.a_15, 4) == 0:
            return False
        return True

except lab0: pass
        # (, line 115
        # or, line 116
        try:
            v_3 = self.limit - self.cursor
            try:
                # (, line 116
                # literal, line 116
                if not self.eq_s_b(1, u"a"):
                    raise lab3()
                # goto, line 116
                try:
                    while True:
                        v_4 = self.limit - self.cursor
                        try:
                            if not self.in_grouping_b(TurkishStemmer.g_vowel1, 97, 305):
                                raise lab5()
                            self.cursor = self.limit - v_4
                            raise lab4()
                        except lab5: pass
                        self.cursor = self.limit - v_4
                        if self.cursor <= self.limit_backward:
                            raise lab3()
                        self.cursor -= 1
                except lab4: pass
                raise lab2()
            except lab3: pass
            self.cursor = self.limit - v_3
            try:
                # (, line 117
                # literal, line 117
                if not self.eq_s_b(1, u"e"):

def r_mark_possessives(self):
        # (, line 166
        # among, line 167
        if self.find_among_b(TurkishStemmer.a_0, 10) == 0:
            return False
        # (, line 169
        # call mark_suffix_with_optional_U_vowel, line 169
        if not self.r_mark_suffix_with_optional_U_vowel():
            return False
        return True

def r_mark_nUn(self):
        # (, line 193
        # call check_vowel_harmony, line 194
        if not self.r_check_vowel_harmony():
            return False
        # among, line 195
        if self.find_among_b(TurkishStemmer.a_3, 4) == 0:
            return False
        # (, line 196
        # call mark_suffix_with_optional_n_consonant, line 196
        if not self.r_mark_suffix_with_optional_n_consonant():
            return False
        return True

def r_mark_ncA(self):
        # (, line 240
        # call check_vowel_harmony, line 241
        if not self.r_check_vowel_harmony():
            return False
        # among, line 242
        if self.find_among_b(TurkishStemmer.a_11, 2) == 0:
            return False
        # (, line 243
        # call mark_suffix_with_optional_n_consonant, line 243
        if not self.r_mark_suffix_with_optional_n_consonant():
            return False
        return True

def r_mark_DUr(self):
        # (, line 277
        # call check_vowel_harmony, line 278
        if not self.r_check_vowel_harmony():
            return False
        # among, line 279
        if self.find_among_b(TurkishStemmer.a_18, 8) == 0:
            return False
        return True

def r_mark_ysA(self):
        # (, line 296
        # among, line 297
        if self.find_among_b(TurkishStemmer.a_21, 8) == 0:
            return False
        # (, line 298
        # call mark_suffix_with_optional_y_consonant, line 298
        if not self.r_mark_suffix_with_optional_y_consonant():
            return False
        return True