i have try your way , but all i need is this address private key 1LqjM4jpuZSXp4Fx5jvJrAW8YC8sQjzMyZ
when i use
Blockchain.MyWallet.wallet._getPrivateKey(0-10,"M/0/48")
and import didn't find this address

why i can use this address receive and send bitcoin but i can not know this address private key?
blockchain.info wallet really bad