wro4j-core/src/main/java/ro/isdc/wro/http/WroFilter.java
private WroConfiguration createConfiguration() {
    // Extract config from servletContext (if already configured)
    // TODO use a named helper
    final WroConfiguration configAttribute = ServletContextAttributeHelper.create(filterConfig).getWroConfiguration();
    if (configAttribute != null) {
      setConfiguration(configAttribute);
    }
    return getWroConfigurationFactory().create();
  }
private WroConfiguration createConfiguration() {
    // Extract config from servletContext (if already configured)
    // TODO use a named helper
    final WroConfiguration configAttribute = ServletContextAttributeHelper.create(filterConfig).getWroConfiguration();
    if (configAttribute != null) {
      setConfiguration(configAttribute);
    }
    return getWroConfigurationFactory().create();
  }
Creates configuration by looking up in servletContext attributes. If none is found, a new one will be created using
the configuration factory.

@return {@link WroConfiguration} object.