Creates a symbolic link to another file in the vault.
This method creates a new symbolic link named LinkName that points to the file specified by DestinationName.
The value passed for LinkName must be a vault-local absolute path. The value passed for DestinationName must also be a vault-local path, but may be absolute or relative to LinkName.
Note: This method can only be called when Active is true, and cannot be called within events.