Best way to build a class to run an SQL package

Question

I am building a layer of access to the database and I need to access the functions inside a package on the oracle server.

Orm already connects to the database and accesses tables and procedures through their respective repositories and entities.

I thought of creating a service class with several return classes and methods mapping functions, as in the model below:

public class RetornoMetodoA
{
    public string ValorA { get; set; }
    public int ValorB { get; set; }
}

public class RetornoMetodoB
{
    public string ValorA { get; set; }
}

public class PacoteSQLServico
{
    public RetornoMetodoA Funcao1(string parametro1)
    {
        var retorno = new RetornoMetodoA();
        //Acessa o banco e roda a função do package
        // exec PacoteSQLServico.Funcao1(parametro1)
        return retorno;
    }

    public RetornoMetodoB Funcao2(string parametro1, string parametro2)
    {
        var retorno = new RetornoMetodoB();
        //Acessa o banco e roda a função
        // exec PacoteSQLServico.Funcao2(parametro1, parametro2) 
        return retorno;
    }
}

In terms of code design, what would be the best way to do that?