IEnumerable.count Method
        
 Returns the number of elements in a sequence.  If "predicate" is provided,
 returns a number that represents how many elements in the specified sequence
 satisfy a condition.
 
         
        Parameters
        
            - predicate
            
 
            - 
                
Type: Function
A function to test each element for a condition.
Optional: True 
        
        Return Value
        
Type: Number
        
A number that represents how many elements in the sequence satisfy the condition in the predicate function.