Error: char 0x200b not allowed in identifier

[zoujiaqing]

Error for code:
source/hunt/xml/Element.d(12,13): Error: char 0x200b not allowed 
in identifier
source/hunt/xml/Element.d(12,23): Error: character 0x200b is not 
a valid token
source/hunt/xml/Element.d(17,15): Error: char 0x200b not allowed 
in identifier
source/hunt/xml/Element.d(17,26): Error: character 0x200b is not 
a valid token
source/hunt/xml/Element.d(22,13): Error: char 0x200b not allowed 
in identifier
source/hunt/xml/Element.d(22,29): Error: character 0x200b is not 
a valid token
source/hunt/xml/Element.d(48,13): Error: char 0x200b not allowed 
in identifier
source/hunt/xml/Element.d(48,21): Error: character 0x200b is not 
a valid token
source/hunt/xml/Element.d(55,13): Error: char 0x200b not allowed 
in identifier
source/hunt/xml/Element.d(55,23): Error: character 0x200b is not 
a valid token
source/hunt/xml/Element.d(62,13): Error: char 0x200b not allowed 
in identifier
source/hunt/xml/Element.d(62,20): Error: character 0x200b is not 
a valid token


The Code file Element.d

```D
module hunt.xml.Element;

import hunt.xml.ElementType;

class Element
{
     this(string name)
     {
         this._name = name;
     }

     Element addElement​(string name)
     {
         return new Element(name);
     }

     Element[] getElements​()
     {
         return this._elements;
     }

     Element getParentELement​()
     {
         return this._parentElement;
     }

     Element removeAttribute(string key)
     {
         this._attributes.remove(key);

         return this;
     }

     Element addAttribute(string key, string value)
     {
         this._attributes[key] = value;

         return this;
     }

     Element setAttribute(string key, string value)
     {
         this._attributes[key] = value;

         return this;
     }

     Element addCDATA​(string cdata)
     {
         this._cdata = cdata;

         return this;
     }

     Element addComment​(string comment)
     {
         this._comments ~= comment;

         return this;
     }

     Element addText​(string text)
     {
         this._text = text;

         return this;
     }

     private
     {
         string _name;
         Element[] _elements;
         Element _parentElement;
         string[string] _attributes;
         string[] _comments;
         string _text;
         string _cdata;
     }
}
```