Function librocksdbsys::crocksdb_merge_cf

pub unsafe extern "C" fn crocksdb_merge_cf(
    db: *mut DBInstance, 
    writeopts: *const DBWriteOptions, 
    cf: *mut DBCFHandle, 
    k: *const u8, 
    kLen: size_t, 
    v: *const u8, 
    vLen: size_t, 
    err: *mut *mut c_char
)