Member predicate RegexString :: getBackrefName

Gets the name, if it has one, of the back reference in start,end


                            
                                
                                    string
                                
                                 
                            
                            
                                getBackrefName
                            
                            
                                (
                                
                                    
                                        int
                                    
                                     
                                    start
                                
                                , 
                                
                                    
                                        int
                                    
                                     
                                    end
                                
                                )