Method write

crates/vm/src/stdlib/_io.rs:279–286

(&mut self, data: &[u8])

        }

        fn write(&mut self, data: &[u8]) -> Option<u64> {
            if data.is_empty() {
                return Some(0);
            }
            let length = data.len();
            self.cursor.write_all(data).ok()?;
            Some(length as u64)
        }

        //return the entire contents of the underlying
        fn getvalue(&self) -> Vec<u8> {