func (d *Dictionary) IsObject() bool {
	return true
}
IsObject is for Object interface.
package object
import (
	"fmt"
	"sort"
	"github.com/yofu/dxf/format"
	"github.com/yofu/dxf/handle"
)
type Dictionary struct {
	handle int
	item   map[string]handle.Handler
}