`_get_op_result_or_value` was used in mix-ins to unify the handling of op results and values. However, that function is now called in the generated constructors, such that doing so in the mix-ins is not necessary anymore.
`_get_op_result_or_value` was used in mix-ins to unify the handling of op results and values. However, that function is now called in the generated constructors, such that doing so in the mix-ins is not necessary anymore.