def METHOD_NAME(cls, ontology_prefix: str) -> int:
    """Given an ontology prefix, download the entire ontology and import it"""
    # Normalize ontology prefixes to be stored in lowercase
    ontology_prefix = ontology_prefix.lower()
    if ontology_prefix == "cvcl":
        return cls.import_cellosaurus_ontology()
    elif is_ols_ontology(ontology_prefix):
        return cls.import_ols_ontology(ontology_prefix)
    else:
        raise ValueError(
            f"Cannot import the {ontology_prefix} ontology; no source database recognized."
        )