code: public static Map<String, String> convertPropertiesToServerFormat(
          CmsObject cms,
          Map<String, String> props,
          Map<String, CmsXmlContentProperty> propConfig) {
  
          return convertProperties(cms, props, propConfig, false);
      }
docs: Converts a map of properties from client format to server format.<p>
  
  @param cms the CmsObject to use for VFS operations
  @param props the map of properties
  @param propConfig the property configuration
  
  @return the converted property map