trait FromWitness<F, T>where
F: PrimeField,{
// Required method
fn new_from_env(&self, env: &ArgumentEnv<F, T>) -> T;
}trait FromWitness<F, T>where
F: PrimeField,{
// Required method
fn new_from_env(&self, env: &ArgumentEnv<F, T>) -> T;
}