Function groonga_sys::groonga::grn_hash_add

pub unsafe extern "C" fn grn_hash_add(
    ctx: *mut grn_ctx, 
    hash: *mut grn_hash, 
    key: *const c_void, 
    key_size: c_uint, 
    value: *mut *mut c_void, 
    added: *mut c_int
) -> grn_id