How to explicitly terminate the using refinement? in Ruby

Please observe the following code:

</a> refinement :

Because refinement activation should be as static as possible.
Mar.03,2021

unlike opening a class, refinement does not take effect by default. The scope of refinement is valid only within the module. Refinement is similar to opening a class, except that refinement is not global.
refinement is only valid in two situations: inside the 1.refine code block; 2. Start from the location of the using statement to the end of the module (if the using statement is called within the module), or to the end of the file (if using is called in the top-level context).
within the limited scope of refinement, it works the same as opening a class (or monkey patch).
refining a class is like typing a patch directly into the original code.

Menu