Finds out whether given attachment name is unique.
            
Namespace: CMS.DocumentEngineAssembly: CMS.DocumentEngine (in CMS.DocumentEngine.dll) Version: 8.0.0.0 (8.0.5239.26125)
Parameters
- node
 - Type: CMS.DocumentEngine TreeNode
Document node 
- fileName
 - Type: 
System String
Attachment file name 
- extension
 - Type: 
System String
File extension 
- currentAttachmentId
 - Type: 
System Int32
Current attachment ID 
- tree
 - Type: CMS.DocumentEngine TreeProvider
Tree object 
Return Value
Type:True if attachment name is unique
See Also