So the republicans are calling for Adam Schiff to testify before the judiciary committee impeachment proceedings. I say why not. In exchange for the testimony and documents Trump has been been withholding. Also if Schiff is to testify then Nunes should also go under oath and testify to the lies he has been spewing throughout the prior hearings.
So just say yes, Schiff will testify if they will and they will provide the requested documentation.