def METHOD_NAME(self) -> dict[str, list[str]]:
    """Pre-populate mapping groupped by persistence type.
    Example of pre-populated groupped mapping:
    ```py
    {
        "sql": ["cache", "default", "session"],
        "couchbase": ["user"],
        "spanner": ["token"],
        "ldap": ["site"],
    }
    ```
    """
    mapper = defaultdict(list)
    for k, v in self.mapping.items():
        mapper[v].append(k)
    return dict(sorted(mapper.items()))