Canonicalizes the given mime type and interns the result.
If string is not a valid mime type, null is returned instead. See RFC 2048 for the syntax if mime types.
string of a potential mime type
An interned string for the canonicalized mime type or null if the string wasn't a valid mime type
Canonicalizes the given mime type and interns the result.
If string is not a valid mime type, null is returned instead. See RFC 2048 for the syntax if mime types.