RepeaterGroup.addBottomLeftCornerTemplates Method
        
 Adds bottom-left corner templates to the group.
 
         
        Parameters
        
            - templates
            
 
            - 
                
Type: Array
ElementType: Template
The templates to add. 
            - insertIndex
            
 
            - 
                
Type: Number (Integer)
(optional) An index in the array at which to insert the templates. If not specified, the template will be added to the end.
Optional: True