Regex Tester & Validator

This regex matches a specific C# method call used to define nullable fields in GraphQL.NET schemas, capturing both the field's type and its name. It specifically looks for the Field<Type>("Name", null, nullable: true, null); syntax, extracting the alphanumeric type and name strings into separate capture groups. Developers can use this pattern to find, audit, or refactor legacy GraphQL field definitions, such as updating them to newer syntaxes or analyzing schema configurations across a large codebase.