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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 get(cls, blob_key, **ctx_options):
 """Retrieve a BlobInfo by key. Args: blob_key: A blob key. This may be a str, unicode or BlobKey instance. **ctx_options: Context options for Model().get_by_id(). Returns: A BlobInfo entity associated with the provided key, If there was no such entity, returns None. """

    fut = cls.get_async(blob_key, **ctx_options)
    return fut.get_result()