pkg, err := w.importFrom(fromPath, fromDir, mode)
	if err != nil {
		return nil, err
	}
	return pkg.Package, nil
}

func (w *Walker) import_(name string) (*apiPackage, error) {
	return w.importFrom(name, "", 0)
}

func (w *Walker) importFrom(fromPath, fromDir string, mode types.ImportMode) (*apiPackage, error) {
	name := fromPath

pkg encoding/xml, method (*Decoder) InputOffset() int64

# CL 124940043 cmd/go, go/build: implement import comment checking, Russ Cox <******@****.***>
pkg go/build, const ImportComment = 4
pkg go/build, const ImportComment ImportMode
pkg go/build, type Package struct, ImportComment string

# CL 155050043 go/build: Return MultiplePackageError on importing a dir containing multiple packages, Jens Frederich <******@****.***>

pkg go/build, const AllowBinary ImportMode
pkg go/build, const FindOnly ImportMode
pkg go/build, func ArchChar(string) (string, error)
pkg go/build, func Import(string, string, ImportMode) (*Package, error)
pkg go/build, func ImportDir(string, ImportMode) (*Package, error)
pkg go/build, func IsLocalImport(string) bool
pkg go/build, method (*Context) Import(string, string, ImportMode) (*Package, error)