Method simple

crates/vm/src/protocol/buffer.rs:177–185

(bytes_len: usize, readonly: bool)

impl BufferDescriptor {
    pub fn simple(bytes_len: usize, readonly: bool) -> Self {
        Self {
            len: bytes_len,
            readonly,
            itemsize: 1,
            format: Cow::Borrowed("B"),
            dim_desc: vec![(bytes_len, 1, 0)],
        }
    }

    pub fn format(
        bytes_len: usize,