CacheManager.getCache Method
        
 Gets a cache value.
 
         
        Parameters
        
            - key
            
 
            - 
                
Type: String
The key to identify the cache value. 
            - renewExpiry
            
 
            - 
                
Type: Boolean
 (Optional) True to renew the expiry time.  
        
        Return Value
        
Type: Object - May be null
A cached object or null if none is found.