whole_func_string: function loadObjectData(object, keyProperty, labelProperty, objectLoader,
                          onLoadingStart = () => {}, onLoadingEnd = () => {}) {
    if (isNil(object)) {
      return Promise.resolve(object);
    }
    // is multiple
    if (Array.isArray(object)) {
      const someObjectHasNoLabel = object.some(item => !hasIn(item, labelProperty));
  
      if (someObjectHasNoLabel) {
        onLoadingStart();
        return Promise.all(
          object.map(item => _loadSingleObject(item, keyProperty, labelProperty, objectLoader))
        ).then(responses => {
          onLoadingEnd();
          return responses.map(response => _getObjectWithFallback(response, keyProperty, labelProperty));
        });
      } else {
        return Promise.resolve(object);
      }
    } else {
      onLoadingStart();
      return _loadSingleObject(object, keyProperty, labelProperty, objectLoader).
        then(result => {
          onLoadingEnd();
          return result;
        });
    }
  }
func_code_string: function loadObjectData(object, keyProperty, labelProperty, objectLoader,
                          onLoadingStart = () => {}, onLoadingEnd = () => {}) {
    if (isNil(object)) {
      return Promise.resolve(object);
    }
    // is multiple
    if (Array.isArray(object)) {
      const someObjectHasNoLabel = object.some(item => !hasIn(item, labelProperty));
  
      if (someObjectHasNoLabel) {
        onLoadingStart();
        return Promise.all(
          object.map(item => _loadSingleObject(item, keyProperty, labelProperty, objectLoader))
        ).then(responses => {
          onLoadingEnd();
          return responses.map(response => _getObjectWithFallback(response, keyProperty, labelProperty));
        });
      } else {
        return Promise.resolve(object);
      }
    } else {
      onLoadingStart();
      return _loadSingleObject(object, keyProperty, labelProperty, objectLoader).
        then(result => {
          onLoadingEnd();
          return result;
        });
    }
  }
func_documentation_string: /*
  Loads object(s) from endpoint or falls back to object[labelProperty] -> object[keyProperty]
  
  @param object or array of objects
  @param keyProperty unique identifier, f.e. supplierId
  @param labelProperty object ui property name f.e. _objectLabel
  @param objectLoader function that takes unique identifier as an argument and return Promise with loaded object
  @param onLoadingStart function that handles loading start
  @param onLoadingEnd function that handles loading end
  @returns {*}