def publish_display_data(data, metadata=None, source=None, *, transient=
    None, **kwargs):
    """Publish data and metadata to all frontends.

    See the ``display_data`` message in the messaging documentation for
    more details about this message type.

    Keys of data and metadata can be any mime-type.

    Parameters
    ----------
    data : dict
        A dictionary having keys that are valid MIME types (like
        'text/plain' or 'image/svg+xml') and values that are the data for
        that MIME type. The data itself must be a JSON'able data
        structure. Minimally all data should have the 'text/plain' data,
        which can be displayed by all frontends. If more than the plain
        text is given, it is up to the frontend to decide which
        representation to use.
    metadata : dict
        A dictionary for metadata related to the data. This can contain
        arbitrary key, value pairs that frontends can use to interpret
        the data. mime-type keys matching those in data can be used
        to specify metadata about particular representations.
    source : str, deprecated
        Unused.
    transient : dict, keyword-only
        A dictionary of transient data, such as display_id.
        """
    from IPython.core.interactiveshell import InteractiveShell
    display_pub = InteractiveShell.instance().display_pub
    if transient:
        kwargs['transient'] = transient
    display_pub.publish(data=data, metadata=metadata, **kwargs)
