def to_native_types(self, slicer=None, **kwargs):
values = self<EOL>if slicer is not None:<EOL><INDENT>values = values[slicer]<EOL><DEDENT>return values._format_native_types(**kwargs)<EOL>
Format specified values of `self` and return them.

Parameters
----------
slicer : int, array-like
    An indexer into `self` that specifies which values
    are used in the formatting process.
kwargs : dict
    Options for specifying how the values should be formatted.
    These options include the following:

    1) na_rep : str
        The value that serves as a placeholder for NULL values
    2) quoting : bool or None
        Whether or not there are quoted values in `self`
    3) date_format : str
        The format used to represent date-like values