如何在不同的切换情况下合并方法调用，使代码泛型或优化？

public <T> void mergeMethodCall(T param) {
    if (param instanceof TypeA) {
        methodA((TypeA) param);
    } else if (param instanceof TypeB) {
        methodB((TypeB) param);
    } else {
        // handle other types
    }
}

private void methodA(TypeA param) {
    // method implementation for TypeA
}

private void methodB(TypeB param) {
    // method implementation for TypeB
}

public void mergeMethodCall(int switchCase, Object param) {
    switch (switchCase) {
        case 1:
            methodA(param);
            break;
        case 2:
            methodB(param);
            break;
        default:
            // handle other cases
    }
}

private void methodA(Object param) {
    // method implementation for case 1
}

private void methodB(Object param) {
    // method implementation for case 2
}