src/Smalot/Magento/Catalog/Product.php
public function update($productId, $productData, $storeView = null, $identifierType = null)
    {
        return $this->__createAction('catalog_product.update', func_get_args());
    }
public function update($productId, $productData, $storeView = null, $identifierType = null)
    {
        return $this->__createAction('catalog_product.update', func_get_args());
    }
public function update ( $ productId , $ productData , $ storeView = null , $ identifierType = null ) { return $ this -> __createAction ( 'catalog_product.update' , func_get_args ( ) ) ; }
Allows you to update the required product.
Note that you should specify only those parameters which you want to be updated.

@param string $productId
@param array  $productData
@param string $storeView
@param string $identifierType

@return ActionInterface
Allows you to update the required product . Note that you should specify only those parameters which you want to be updated .