code: private void processSimpleField(Field child) {
      PropertyMetadata propertyMetadata = IntrospectionUtils.getPropertyMetadata(child);
      if (propertyMetadata != null) {
        // Process override
        processPropertyOverride(propertyMetadata);
        metadata.putPropertyMetadata(propertyMetadata);
      }
    }
docs: Processes the given simple (or primitive) field and updates the metadata.
  
  @param child
  the field to process