#warning: '"You will need to configure the type info."'

Change return type to 'void'; not a single caller uses the returned value. (https://rules.sonarsource.com/csharp/RSPEC-3241)

Rename class 'GTMController' to match pascal case naming rules, consider using 'GtmController'. (https://rules.sonarsource.com/csharp/RSPEC-101)

Add a nested comment explaining why this method is empty, throw a 'NotSupportedException' or complete the implementation. (https://rules.sonarsource.com/csharp/RSPEC-1186)

XML comment has badly formed XML -- 'A string literal was expected, but no opening quotation mark was found.'

XML comment has badly formed XML -- 'A string literal was expected, but no opening quotation mark was found.'

'ConsentInfoExtensions.GetConsentText(ConsentInfo, string)' is obsolete: 'Use Task-based method override instead.'

XML comment has a param tag for 'pageRetriever', but there is no parameter by that name

Private classes which are not derived in the current assembly should be marked as 'sealed'. (https://rules.sonarsource.com/csharp/RSPEC-3260)