@TemplateExtension methods falsely reported as unused

[dcucchietti]

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Summary

Public static methods defined in a @TemplateExtension class are reported as "unused" by IntelliJ's code inspection, even though they are actively called from Qute templates. These methods render correctly at runtime — the warning is a false positive.

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Environment

• Quarkus version: 3.32.2
• Qute version: bundled with Quarkus 3.x
• IDE: IntelliJ IDEA with Quarkus plugin

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Steps to Reproduce

A repository is available to reproduce the error : link

1. Create a @TemplateExtension class with an extension method, see example

  @TemplateExtension
  public class GlobalExtension {

      public static String ellipsis(String value, int maxLength) {
          if (value == null || value.length() <= maxLength) {
              return value;
          }
          return value.substring(0, maxLength) + "…";
      }
  }

2. Call it from a Qute template:

    <p>{description.ellipsis(20)}</p>

3. Open GlobalExtension.java in IntelliJ and observe the inspection warning on ellipsis().

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Expected Behavior

No "unused" warning should be raised. The Quarkus plugin should recognize that public static methods in @TemplateExtension classes are callable as virtual methods on their first parameter type in Qute templates.

[angelozerr]

Indeed it should be nice but we need to take care of performance to implement this idea.