Map<String, String> parameters

A map representing the parameters of the media type.

A data URI may contain parameters between the MIME type and the data. This converts these parameters to a map from parameter name to parameter value. The map only contains parameters that actually occur in the URI. The charset parameter has a default value even if it doesn't occur in the URI, which is reflected by the charset getter. This means that charset may return a value even if parameters["charset"] is null.

If the values contain non-ASCII values or percent escapes, they default to being decoded as UTF-8.