public String getSerdeClass(String name) {
    return get(String.format(SerializerConfig.SERDE_FACTORY_CLASS, name), null);
  }
Get the class name according to the serde name.

@param name serde name
@return serde factory name, or null if there is no factory defined for the
        supplied serde name.
samza-log4j2/src/main/java/org/apache/samza/config/Log4jSystemConfig.java