Golang SQL-如何处理过程输出参数

Question

I have an oracle procedure, which i call like that:

DECLARE
  ID       NUMBER := 12345;
  Var1     NUMBER := NULL;
  Var2     NUMBER := NULL;
BEGIN
  PKG_A.GET_ACCOUNT_VALUES(
    ACCOUNT_ID     => ID,
    SOMEVALUE1     => Var1,
    SOMEVALUE2     => Var2
  );
END;

ID param is IN/OUT, Var1 and Var2 - OUT.

It's an external system, I can`t change this procedure. How can I get this three values with the help of database/sql library (oci8 driver)? Can I bind somehow, to this Params, or maybe get them with DBMS_OUTPUT some way. Thanks for your help.