async fn apply_modifier(self, modifier: IncorrectnessModifier, signer: &Signer<S>) -> Self {
        match modifier {
            IncorrectnessModifier::None => self,
            IncorrectnessModifier::IncorrectSignature => self, // signature will be changed before submitting transaction
            IncorrectnessModifier::ZeroFee => self.zero_fee(signer).await,
        }
    }
Automatically chooses one of the methods of this trait based on the provided incorrectness modifier.
core/tests/loadnext/src/corrupted_tx.rs