def delete_entry_from_nested_dict(
        nested_dict: dict[str, dict[str, str | int]],
        id_to_delete: str
    ) -> dict[str, dict[str, str | int]]:
    """
    Delete an entry with a specified ID from a nested dictionary.

    Parameters
    ----------
    nested_dict : dict[str, dict[str, str | int]]
        A nested dictionary where keys are IDs.
    id_to_delete : str
        The ID of the entry to delete.

    Returns
    -------
    dict[str, dict[str, str | int]]
        The nested dictionary after deleting the specified entry.

    Examples
    --------
    >>> nested_dict = {
    ...     '1': {'name': 'Alice', 'age': 30},
    ...     '2': {'name': 'Bob', 'age': 25}
    ... }
    >>> delete_entry_from_nested_dict(nested_dict, '1')
    {'2': {'name': 'Bob', 'age': 25}}
    >>> delete_entry_from_nested_dict(nested_dict, '3')
    {'2': {'name': 'Bob', 'age': 25}}
    >>> delete_entry_from_nested_dict(nested_dict, '2')
    {}	
    """
    raise NotImplementedError("Complete this function.")