Replace nested ifs with one if and conditions joined with &&

What problem are you trying to solve?

Simplify code.

Describe the situation before applying the recipe

    class A {
        void foo(boolean a, boolean b) {
            if (a) {
                if (b) {
                }
            }
        }
    }

Describe the situation after applying the recipe

    class A {
        void foo(boolean a, boolean b) {
            if (a && b) {
            }
        }
    }

Things to take into account

• parenthesis might or might not be needed
• only applicable if there's no other logic in the outer if

Start from the nested-if Java example in the issue and inspect the repository's existing static-analysis recipe conventions. Apply the transformation only when the outer if has no other logic, accounting for whether parentheses are needed. Use the before-and-after examples as recipe tests and verify the nested condition becomes one && condition.