setMustBeFresh in consumer

[dulalsaurab]

While fetching the data consumer sets setMustBeFresh flag. If the data is stale or has a relatively smaller freshness period, consumers won't be able to fetch the data. Aditionally, in the current implementation, the freshness period (+interest flags) is internally set by the library, thus, the application doesn't control these interest and data flags to make the right adjustment as per the need.

[tylerliu]

For this, I wonder if it is better to make a Consumer::consume function with Interest as argument instead of data name as argument?