@Override
    public Configuration getConfiguration(final LoggerContext loggerContext, final ConfigurationSource source) {
        return new OapConfiguration(loggerContext, source);
    }
Return the configuration.
@param loggerContext The logger context
@param source The input source
@return the configuration
oap-server/server-core/src/main/java/org/apache/skywalking/oap/server/core/logging/log4j/OapConfigurationFactory.java