Is this else if statement only for handling code blocks? I debugged the code, and this else if statement was used only when we encountered code blocks.

If yes, then the currentLineWithPreservedIndent variable name doesn't make much sense. There is no indentation for code blocks:

currentLineWithPreservedIndent should be renamed to currentCodeBlockLine or something similar, ask AI for better naming, I'm bad at naming things :p

This else if statement is for any block that is under the <pre></pre> tags which work to preserve the indentation. This might be mostly for code blocks, but not always, as I've only implemented this macro for 2 checks. So far, in this check example, there is only 1 line of code with no indent which is just an occasion, but for more complex code examples, there can be different levels of indentation just like in the actual java code which has to be accounted and not hard-given the identical indentation like for the rest of blocks.

I checked all module's description and mostly all of them had <pre> tag followed by <code> tag, there were <pre> tags without <code> but they weren't in module's description, at least I couldn't find such case.

Anyways, this conversation is Resolved 👍🏻

This method is used when the module doesn't have any properties, so we find the following part in module's javadoc:

 * <p>
 * Parent is {@code com.puppycrawl.tools.checkstyle.TreeWalker}
 * </p>

and return it's index.

The description is little confusing if you don't know what method does, so it should be simplified to something like:

Gets the starting index of the "Parent is" paragraph in module's javadoc.

Done