const go/ast.Fun

4 uses

	go/ast (current package)
		scope.go#L146: 	Fun                // function or method
		scope.go#L156: 	Fun: "func",

	go/parser
		parser.go#L963: 	p.declare(spec, nil, scope, ast.Fun, idents...)
		parser.go#L2485: 			p.declare(decl, nil, p.pkgScope, ast.Fun, ident)