Macro littlefs2::const_ram_storage

macro_rules! const_ram_storage {
    (name = $Name : ident, trait = $StorageTrait : path, erase_value =
 $erase_value : expr, read_size = $read_size : expr, write_size = $write_size
 : expr, cache_size_ty = $cache_size : path, block_size = $block_size : expr,
 block_count = $block_count : expr, lookaheadwords_size_ty =
 $lookaheadwords_size : path, filename_max_plus_one_ty =
 $filename_max_plus_one : path, path_max_plus_one_ty = $path_max_plus_one :
 path, result = $Result : ident,) => { ... };
    ($Name : ident, $bytes : expr) => { ... };
}