// PosBase, Pkg, and Type sections, respectively.
	posBases []string // position bases (i.e., file names)
	pkgs     []*types.Package
	typs     []types.Type

	// laterFns holds functions that need to be invoked at the end of
	// import reading.
	laterFns []func()

	// ifaces holds a list of constructed Interfaces, which need to have
	// Complete called after importing is done.
	ifaces []*types.Interface
}