SudachiPyの正規化処理だけ使いたい

SudachiPyと正規化処理を揃えたかったので、該当処理だけ抜き出しました。

from sudachipy import dictionary
from sudachipy.utf8inputtextbuilder import UTF8InputTextBuilder

dictionary = dictionary.Dictionary()
input_text_plugins = dictionary.input_text_plugins
grammar = dictionary.grammar

def normalize(text):
    builder = UTF8InputTextBuilder(text, grammar)
    for plugin in input_text_plugins:
        plugin.rewrite(builder)
    return builder.get_text()

if __name__ == '__main__':
    print(normalize('ＡBＣ12３')) # -> abc123