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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def load_model(modelname, add_sentencizer=False):
 """ Load a specific spaCy model """

    loading_start = time.time()
    nlp = spacy.load(modelname)
    if add_sentencizer:
        nlp.add_pipe(nlp.create_pipe('sentencizer'))
    loading_end = time.time()
    loading_time = loading_end - loading_start
    if add_sentencizer:
        return nlp, loading_time, modelname + '_sentencizer'
    return nlp, loading_time, modelname