Function MimeType.clone
Create MimeType deep copy.
Example
auto origin = new MimeType("text/xml");
origin .icon = "xml";
origin .genericIcon = "text";
origin .displayName = "XML document";
origin .addXMLnamespace(XMLnamespace("http://www.w3.org/1999/xhtml", "html"));
origin .addParent("text/plain");
origin .addAlias("application/xml");
origin .addGlob("*.xml");
auto firstMagic = MimeMagic(50);
firstMagic .addMatch(MagicMatch(MagicMatch .Type .string_, [0x01, 0x02]));
origin .addMagic(firstMagic);
auto secondMagic = MimeMagic(60);
secondMagic .addMatch(MagicMatch(MagicMatch .Type .string_, [0x03, 0x04]));
origin .addMagic(secondMagic);
origin .addTreeMagic(TreeMagic(50));
auto clone = origin .clone();
assert(clone .name() == origin .name());
assert(clone .icon() == origin .icon());
assert(clone .genericIcon() == origin .genericIcon());
assert(clone .XMLnamespaces() == origin .XMLnamespaces());
assert(clone .displayName() == origin .displayName());
assert(clone .parents() == origin .parents());
assert(clone .aliases() == origin .aliases());
assert(clone .globs() == origin .globs());
assert(clone .magics() .length == origin .magics() .length);
clone .clearTreeMagic();
assert(origin .treeMagics() .length == 1);
origin .addParent("text/markup");
assert(origin .parents() == ["text/plain", "text/markup"]);
assert(clone .parents() == ["text/plain"]);