Calculates the Accumulation/Distribution indicator and returns its value.    
    
                    await Indicators.AD(symbol:string, timeframe:string, priceType:int)
    
    
            
            Parameters
            
                
                
                    | Name | Type | Действие | Значение по умолчанию | 
                
                
                                    
                        | symbol | string | Symbol name on the data of which the indicator will be calculated. null means the current symbol. | — | 
                                    
                        | timeframe | string | TimeFrame. It can be any of TimeFrame enumeration values. 0 means the current chart timeframe. | — | 
                                    
                        | priceType | int | Price type | — | 
                                
            
         
    
            
            Return value
            
                Numerical values of the Accumulation/Distribution indicator.
                            
         
    
    
        
        Example
        let listAD = await Indicator.AD(Current.Symbol, Current.TimeFrame, PriceType.Bid);