Indeed. In the case of an immunity grant, a judge will compel you to testify or throw you in jail for contempt of court iirc (ianal). But these are all things y

Indeed. In the case of an immunity grant, a judge will compel you to testify or throw you in jail for contempt of court iirc (ianal). But these are all things your lawyer, which you should already have long before you get an immunity grant, will tell you