'string', 'quantity' => 'float', 'cost' => 'float', 'product_key' => 'string', 'notes' => 'string', 'discount' => 'float', 'is_amount_discount' => 'bool', 'tax_name1' => 'string', 'tax_name2' => 'string', 'tax_name3' => 'string', 'tax_rate1' => 'float', 'tax_rate2' => 'float', 'tax_rate3' => 'float', 'sort_id' => 'string', 'line_total' => 'float', 'date' => 'string', 'custom_value1' => 'string', 'custom_value2' => 'string', 'custom_value3' => 'string', 'custom_value4' => 'string', ]; }