Attaches the specified object to the specified index.
clouddirectory_attach_to_index(DirectoryArn, IndexReference,
TargetReference)
[required] The Amazon Resource Name (ARN) of the directory where the object and index exist.
[required] A reference to the index that you are attaching the object to.
[required] A reference to the object that you are attaching to the index.
svc$attach_to_index( DirectoryArn = "string", IndexReference = list( Selector = "string" ), TargetReference = list( Selector = "string" ) )