directImage method
Direct image ().
Implementation
Parser<ImageNode> directImage() =>
seq8(
position(),
string('!['),
ref0(linkText),
char(']'),
char('('),
ref0(linkDestinationAndTitle),
char(')'),
position(),
).map8(
(start, _, alt, _, _, dest, _, stop) =>
ImageNode(alt, dest.$1, title: dest.$2, start: start, stop: stop),
);