Method equals

src/main/java/pascal/taie/util/collection/MapEntry.java:66–76

(Object obj)

    }

    @Override
    public boolean equals(Object obj) {
        if (obj == this) {
            return true;
        }
        if (!(obj instanceof Entry<?, ?> e)) {
            return false;
        }
        return Objects.equals(key, e.getKey()) &&
                Objects.equals(value, e.getValue());
    }

    @Override
    public int hashCode() {