presto-parser/src/main/java/io/prestosql/sql/tree/IfExpression.java/IfExpression/equals
class IfExpression:    @Override
    public boolean equals(Object obj)
    {
        if (this == obj) {
            return true;
        }
        if ((obj == null) || (getClass() != obj.getClass())) {
            return false;
        }
        IfExpression o = (IfExpression) obj;
        return Objects.equals(condition, o.condition) &&
                Objects.equals(trueValue, o.trueValue) &&
                Objects.equals(falseValue, o.falseValue);
    }