Get, Set variable methods to make code easily readable

1. Intead of declaring variables in Script task, when you always forget to declare them and then have errors during runtime - forget declaring, use easy and nice way

// No need to declare READ, WRITE variable and short form of accessing
private T Get<T>(string varName)
{
    Variables lockedVariables = null;
    T var;
    Dts.VariableDispenser.LockOneForRead(varName, ref lockedVariables);
    var = (T)lockedVariables[varName].Value;
    lockedVariables.Unlock();
    return var;
}

private void Set<T>(string varName, T value)
{
    Variables lockedVariables = null;
    Dts.VariableDispenser.LockOneForWrite(varName, ref lockedVariables);
    lockedVariables[varName].Value = value;
    lockedVariables.Unlock();
}

2. Here is example code to use variables

string someName = Get<string>("User::someName");
int someInt = Get<int>("User::someInt");
Set("User::content", "some text");
// OR 
Set<string>("User::content", "some text");