function common_test_preprocess
Implements MODULE_preprocess().
See also
RenderTest::testDrupalRenderThemePreprocessAttached()
File
- 
              core/
modules/ system/ tests/ modules/ common_test/ common_test.module, line 125  
Code
function common_test_preprocess(&$variables, $hook) {
  if (!\Drupal::state()->get('theme_preprocess_attached_test', FALSE)) {
    return;
  }
  $variables['#attached']['library'][] = 'test/generic_preprocess';
}
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