Method chain

crates/stdlib/src/compression.rs:85–94

(data1: &'a [u8], data2: &'a [u8])

        }
    }
    pub const fn chain(data1: &'a [u8], data2: &'a [u8]) -> Self {
        if data1.is_empty() {
            Self {
                data1: data2,
                data2: &[],
            }
        } else {
            Self { data1, data2 }
        }
    }
    pub const fn len(&self) -> usize {
        self.data1.len() + self.data2.len()
    }