How do you resolve disagreements or contentious issues that arise after colleagues review the code?

When disagreements arise after reviewing code, it is important to maintain a constructive and respectful tone. Usually, I suggest discussing the contentious point with colleagues, providing arguments based on readability, performance, security, and maintainability of the code. If opinions diverge significantly, it is helpful to refer to the official project guidelines or widely accepted coding standards. In extreme cases, a vote can be conducted or a more experienced developer can be involved to make a decision. The main goal is to improve the quality of the code and team collaboration, rather than winning an argument.