This plugin is used to manage CSS class of file icons.
You can find the configuration file of this component at: 
    extension/webapp/src/main/webapp/WEB-INF/ks-extension/ks/forum/cs-class-configuration.xml.
  
To use the plugin in the component configuration, you must use the following target-component:
<target-component>org.exoplatform.forum.common.webui.cssfile.CssClassManager</target-component>
<external-component-plugins>
<target-component>org.exoplatform.forum.common.webui.cssfile.CssClassManager</target-component>
<component-plugin>
<name>forum.default.cssclass</name>
<set-method>registerCssClassPlugin</set-method>
<type>org.exoplatform.forum.common.webui.cssfile.CssClassPlugin</type>
<description>default supported CSS class icon file</description>
<init-params>
<object-param>
<name>default</name>
<description></description>
<object type="org.exoplatform.forum.common.webui.cssfile.CssClassIconFile">
<field name="type">
<string>default</string>
</field>
<field name="cssClass">
<string>FileDefault</string>
</field>
<field name="groupFileTypes">
<string><![CDATA[applicationoctet-stream]]></string>
</field>
</object>
</object-param>
<object-param>
<name>gzip</name>
<description></description>
<object type="org.exoplatform.forum.common.webui.cssfile.CssClassIconFile">
<field name="type">
<string>gzip</string>
</field>
<field name="cssClass">
<string>FileArchiveDefault</string>
</field>
<field name="groupFileTypes">
<string><![CDATA[applicationx-tar,applicationx-gzip,applicationx-bzip2,applicationother-zip]]></string>
</field>
</object>
</object-param>
<object-param>
...
</object-param>
</init-params>
</component-plugin>
</external-component-plugins>
In which:
        Name: 
        forum.default.cssclass
      
        Type: 
        org.exoplatform.forum.common.webui.cssfile.CssClassPlugin
      
        Object type: 
        org.exoplatform.forum.common.webui.cssfile.CssClassIconFile
      
| Field | Type | Description | 
|---|---|---|
| type | 
			  string
			 | The file extension. | 
| cssClass | 
			  string
			 | The CSS class which is corresponding to the file extension. | 
| groupFileTypes | 
			  string
			 | The list of file types which have the same CSS class as the file extension. |