@Override
              public void visitReferenceExpression(@NotNull PsiReferenceExpression expression) {
                super.visitReferenceExpression(expression);
                final PsiElement resolve = expression.resolve();
                if (resolve instanceof PsiParameter) {
                  paramRefs.add((PsiParameter)resolve);
                }
              }
@Override
              public void visitReferenceExpression(@NotNull PsiReferenceExpression expression)