Macro burn 

macro_rules! burn {
    ($asset_id:expr, $amount:expr) => { ... };
}

Burn the asset

Usage

use we_cdk::*;

#[action]
fn _constructor() {
    let asset_id: Binary = base58!("DnK5Xfi2wXUJx9BjK9X6ZpFdTLdq2GtWH9pWrcxcmrhB");
    let amount: Integer = 100;
    burn!(asset_id, amount);
}