// paramsStructStruct returns the string representation of a structure
func (f paramFiller) paramsStructStruct(value map[string]interface{}, shape *api.Shape) string {
	out := "&" + f.typeName(shape)[1:] + "{\n"
	for _, n := range shape.MemberNames() {
		ref := shape.MemberRefs[n]
		name := findMember(value, n)

		if val := f.paramsStructAny(value[name], ref.Shape); val != "" {
			out += fmt.Sprintf("%s: %s,\n", n, val)
		}
	}
	out += "}"
	return out
}
// typeName returns the type name of a shape.
func (f paramFiller) typeName(shape *api.Shape) string {
	if f.prefixPackageName && shape.Type == "structure" {
		return "*" + shape.API.PackageName() + "." + shape.GoTypeElem()
	}
	return shape.GoType()
}