ArrayEnumerable.intersect Method
        
 Produces the set intersection of two sequences optionally using an equality comparer
 to compare values.
 
         
        Parameters
        
            - second
            
 
            - 
                
Type: IEnumerable
An enumerable whose distinct elements that also appear in this sequence will be returned. 
            - equalityComparer
            
 
            - 
                
Type: IEqualityComparer
An equality comparer to compare values.
Optional: True 
        
        Return Value
        
Type: IEnumerable
        
A sequence that contains the elements that form the set intersection of two sequences.