Govt Grants

Morning Chris, I hope you are doing good. i had a question about govt grant, This topic is preety straight forward but i had a question. "if we buy a depreciating asset with the grant , then we release the deferred income over the life of the asset and using the same methord." So, To be true it sounds like doing a straight line, my question was if there is residual value for the depriciating asset, Would we ignore it or Just deal with it like in straightline ( cost-residual value / useful years ) , If a question had apppeared in front of my eyes, i would simply ignore the residual value ( cost / userful years ) but still wanted to confirm is that correct? and the other bit was, Does the "Same methord" in the notes mean, the methord used for the class of asset ? Thank you very much !!!