Function nginx::EVP_PKEY_add1_attr_by_NID

pub unsafe extern "C" fn EVP_PKEY_add1_attr_by_NID(
    key: *mut EVP_PKEY, 
    nid: c_int, 
    type_: c_int, 
    bytes: *const c_uchar, 
    len: c_int
) -> c_int