ElementPattern to filter and reference PSI, methods or parameters

IntelliJ Platform
,
1

I’m creating a PsiReferenceContributor to reference annotated parameters (@Param) in methods/functions for Java and Kotlin languages.
My difficulty is in how to create the ElementPattern. I tried these ways, but it doesn’t call the getReferencesByElement method, neither for PsiMethod nor for PsiParameter.
I couldn’t identify what I’m doing wrong.
Could someone help me filter and reference the parameters?

<psi.referenceContributor language="UAST" implementation="dev.eltonsandre.reference.ParamsReferenceContributor"/>

public class ParamsReferenceContributor extends PsiReferenceContributor {
    public void registerReferenceProviders(@NotNull final PsiReferenceRegistrar registrar) {
      
        UastReferenceRegistrar.registerUastReferenceProvider(registrar, UastPatterns.uMethod(), new UParamReferenceProvider(), 0);
                
        registrar.registerReferenceProvider(PlatformPatterns.psiElement(PsiMethod.class), new PathVariablePsiReferenceProvider());
    }
}

  private static class UParamReferenceProvider extends UastReferenceProvider {
        @NotNull
        @Override
        public PsiReference[] getReferencesByElement(@NotNull final UElement uElement, @NotNull final ProcessingContext processingContext) {
            if (uElement instanceof UComment)
                return PsiReference.EMPTY_ARRAY;

            return getReferencesParam(uElement);
        }
    }

    private static class PsiParamReferenceProvider extends PsiReferenceProvider {
        @NotNull
        @Override
        public PsiReference[] getReferencesByElement(@NotNull final PsiElement element, @NotNull final ProcessingContext context) {
            if (uElement instanceof UComment)
                return PsiReference.EMPTY_ARRAY;

            return getReferencesParam(element);
        }
//...