Producer for data URIs.
Data URIs embed the data in the URI itself. They don't point to a file location;
the URI is the data. Data can be encoded in either base-64 or escaped ASCII.
See the spec for full details.
Data URIs are intended for small pieces of data only, since the URI lives on the Java
heap. For large data, use a another URI type.
Charsets specified in the URI are ignored. Only UTF-8 encoding is currently supported.
Gets an encoded image from the local resource. It can be either backed by a FileInputStream or
||request that includes the local resource that is being accessed