https://learn.microsoft.com/en-us/dotnet/api/system.text.regularexpressions.regexcompilationinfo?view=netframework-4.8.1&viewFallbackFrom=net-7.0
RegexCompilationInfo Class (System.Text.RegularExpressions) | Microsoft Learn
Provides information about a regular expression that is used to compile a regular expression to a stand-alone assembly.
class systemtextmicrosoftlearn