Loads an object from DynamoDB for the given hash-and-range primary key and using the given config.
            
            Passed-in config overrides DynamoDBContextConfig on the context.
            Type must be marked up with DynamoDBTableAttribute and at least
            one public field/property with DynamoDBHashKeyAttribute.
            
 Declaration Syntax
 Declaration Syntax| C# | 
T Load<T>( Object hashKey, Object rangeKey, DynamoDBOperationConfig operationConfig )
 Generic Template Parameters
 Generic Template Parameters- T
- Type to populate.
 Parameters
 Parameters- hashKey (Object)
- Hash key element of the target item.
- rangeKey (Object)
- Range key element of the target item.
- operationConfig (DynamoDBOperationConfig)
- Overriding configuration.
 Return Value
 Return Value
            Object of type T, populated with properties of item loaded from DynamoDB.