How to access Entiydatamodel in T4 template.

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C#5.0

SQL-Server-2008R2

T4

EF6.0

Hi,
I want to access my entity data model in T4 templates.
I want to generate some code from database in t4 template.
ex: using(var context=new Mymodel())
{
//db operations
}

Please help me
thank you....