code: private void setLegacyParam(String legacyParamName, Object paramValue) {
          if (!m_bWarnedLegacyParam) {
              logger.warn("Parameter '{}': Legacy parameter format is being phased-out. " +
                          "Please use new module/parameter format.", legacyParamName);
              m_bWarnedLegacyParam = true;
          }
          String moduleName = g_legacyToModuleMap.get(legacyParamName);
          if (moduleName == null) {
              logger.warn("Skipping unknown legacy parameter: {}", legacyParamName);
          } else {
              setModuleParam(moduleName, legacyParamName, paramValue);
          }
      }
docs: Sets a parameter using a legacy name.