DateTimeInterval.addIntervalToDate Method
        
 Adds an interval in place to date.
 
         
         
        
            
 This method is static. 
        Parameters
        
            - date
            
 
            - 
                
Type: Date
The date. 
            - interval
            
 
            - 
                
Type: Number
The quantity to add. 
            - intervalType
            
 
            - 
                
Type: DateTimeIntervalType
The type of quantity to add. 
        
        Return Value
        
Type: Date
        
The new value of date.