code: function mutate(entities, operationDescription, transformation) {
      if (!operationDescription) {
          return object;
      }
  
      return entities.map(item => {
          Object.keys(operationDescription)
              .forEach(key => transformation(item, key, operationDescription[key]));
  
          return item;
      });
  }
docs: Mutates the object according to the transform logic.
  
  @param {object} entities Original entity object
  @param {object} operationDescription Update descriptor
  @param {function} transformation Transformator function
  @returns {object}