MAGETWO-33665 : Refactor Quote module to use mutable data object interfaces

 -- reverting changes to setStreet()

Author: Robert He

app/code/Magento/Customer/Model/Address/AbstractAddress.php

@@ -232,21 +232,21 @@ public function getStreetFull()
     /**
      * Alias for a street setter. To be used though setDataUsingMethod('street_full', $value).
      *
-     * @param string[] $street
+     * @param string|string[] $street
      * @return $this
      */
-    public function setStreetFull(array $street = null)
+    public function setStreetFull($street)
     {
         return $this->setStreet($street);
     }
 
     /**
      * Non-magic setter for a street field
      *
-     * @param string[] $street
+     * @param string|string[] $street
      * @return $this
      */
-    public function setStreet(array $street = null)
+    public function setStreet($street)
     {
         $this->setData('street', $street);
         return $this;

app/code/Magento/Quote/Api/Data/AddressInterface.php

@@ -135,10 +135,10 @@ public function getStreet();
     /**
      * Set street
      *
-     * @param string[] $street
+     * @param string|string[] $street
      * @return $this
      */
-    public function setStreet(array $street = null);
+    public function setStreet($street);
 
     /**
      * Get company

app/code/Magento/Quote/Model/Quote/Address.php

@@ -1370,7 +1370,7 @@ public function getStreet()
     /**
      * {@inheritdoc}
      */
-    public function setStreet(array $street = null)
+    public function setStreet($street)
     {
         return $this->setData(self::KEY_STREET, $street);
     }

dev/tests/integration/testsuite/Magento/Customer/_files/customer_address.php

@@ -18,7 +18,7 @@
         'country_id' => 'US',
         'city' => 'CityM',
         'company' => 'CompanyName',
-        'street' => ['Green str, 67'],
+        'street' => 'Green str, 67',
         'lastname' => 'Smith',
         'firstname' => 'John',
         'parent_id' => 1,