HelperInterface is the interface all helpers must implement.
| Methods | ||
|---|---|---|
| 
					
	public
					
					
				 | setHelperSet(?HelperSet $helperSet = null) | # | 
| 
					
	public
					
					
				 | getHelperSet(): HelperSet|null | # | 
| 
					
	public
					
					
				 | getName(): string | # |