comment.Block
// A Block is block-level content in a doc comment,
// one of [*Code], [*Heading], [*List], or [*Paragraph].
type Block interface {}
comment.Text
// A Text is text-level content in a doc comment,
// one of [Plain], [Italic], [*Link], or [*DocLink].
type Text interface {}
comment.DefaultLookupPackage
// DefaultLookupPackage is the default package lookup
// function, used when [Parser].LookupPackage is nil.
// It recognizes names of the packages from the standard
// library with single-element import paths, such as math,
// which would otherwise be impossible to name.
//
// Note that the go/doc package provides a more sophisticated
// lookup based on the imports used in the current package.
func DefaultLookupPackage(name string) (importPath string, ok bool)