public Optional<String> getSerdeFactoryClass(String name) {
    return Optional.ofNullable(get(String.format(SERDE_FACTORY_CLASS, name), null));
  }
Get the name of the serde factory class for {@code name}.
@param name name of the serde in the config
@return serde factory class name for {@code name}; empty if no class was found in the config
samza-core/src/main/java/org/apache/samza/config/SerializerConfig.java