visual studio 2010 - Use of "@this" in Moles delegates -

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when set property of moled type, looks require, first parameter, object of original moled type. noticed of examples in moles reference guide assign parameter @this , trying figure out why.

for instance, original class looks this:

public class productdao {     internal void insert(product product, string id)     {         ...     } }

when go mole method, property expecting delegate first parameter type of moled object, in case, productdao object. in case, property expecting delegate of:

action<productdao, product, string>

so have provide moled object first parameter of lambda expression? if so, what's difference in using regular variable name versus @this? @this mean/do?

mproductdao.allinstances.insertproductstring = (dao, product, id) => { };

versus

mproductdao.allinstances.insertproductstring = (@this, product, id) => { };


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