Create a new non-modifiable buffer from an existing buffer.

const_buffers_1 buffer(
    const const_buffer & b,
    std::size_t max_size_in_bytes);

Return Value

A const_buffers_1 value equivalent to:

const_buffers_1(
    buffer_cast<const void*>(b),
    min(buffer_size(b), max_size_in_bytes));