Do not initialize array property (#1082)

Author: jderusse

src/Result/BatchGetItemOutput.php

@@ -23,19 +23,19 @@ class BatchGetItemOutput extends Result implements \IteratorAggregate
      * A map of table name to a list of items. Each object in `Responses` consists of a table name, along with a map of
      * attribute data consisting of the data type and attribute value.
      */
-    private $responses = [];
+    private $responses;
 
     /**
      * A map of tables and their respective keys that were not processed with the current response. The `UnprocessedKeys`
      * value is in the same form as `RequestItems`, so the value can be provided directly to a subsequent `BatchGetItem`
      * operation. For more information, see `RequestItems` in the Request Parameters section.
      */
-    private $unprocessedKeys = [];
+    private $unprocessedKeys;
 
     /**
      * The read capacity units consumed by the entire `BatchGetItem` operation.
      */
-    private $consumedCapacity = [];
+    private $consumedCapacity;
 
     /**
      * @param bool $currentPageOnly When true, iterates over items of the current page. Otherwise also fetch items in the next pages.

src/Result/BatchWriteItemOutput.php

@@ -22,18 +22,18 @@ class BatchWriteItemOutput extends Result
      * same form as `RequestItems`, so you can provide this value directly to a subsequent `BatchGetItem` operation. For
      * more information, see `RequestItems` in the Request Parameters section.
      */
-    private $unprocessedItems = [];
+    private $unprocessedItems;
 
     /**
      * A list of tables that were processed by `BatchWriteItem` and, for each table, information about any item collections
      * that were affected by individual `DeleteItem` or `PutItem` operations.
      */
-    private $itemCollectionMetrics = [];
+    private $itemCollectionMetrics;
 
     /**
      * The capacity units consumed by the entire `BatchWriteItem` operation.
      */
-    private $consumedCapacity = [];
+    private $consumedCapacity;
 
     /**
      * @return ConsumedCapacity[]

src/Result/DeleteItemOutput.php

@@ -18,7 +18,7 @@ class DeleteItemOutput extends Result
      * A map of attribute names to `AttributeValue` objects, representing the item as it appeared before the `DeleteItem`
      * operation. This map appears in the response only if `ReturnValues` was specified as `ALL_OLD` in the request.
      */
-    private $attributes = [];
+    private $attributes;
 
     /**
      * The capacity units consumed by the `DeleteItem` operation. The data returned includes the total provisioned

src/Result/GetItemOutput.php

@@ -16,7 +16,7 @@ class GetItemOutput extends Result
     /**
      * A map of attribute names to `AttributeValue` objects, as specified by `ProjectionExpression`.
      */
-    private $item = [];
+    private $item;
 
     /**
      * The capacity units consumed by the `GetItem` operation. The data returned includes the total provisioned throughput

src/Result/ListTablesOutput.php

@@ -19,7 +19,7 @@ class ListTablesOutput extends Result implements \IteratorAggregate
      * The names of the tables associated with the current account at the current endpoint. The maximum size of this array
      * is 100.
      */
-    private $tableNames = [];
+    private $tableNames;
 
     /**
      * The name of the last table in the current page of results. Use this value as the `ExclusiveStartTableName` in a new

src/Result/PutItemOutput.php

@@ -18,7 +18,7 @@ class PutItemOutput extends Result
      * The attribute values as they appeared before the `PutItem` operation, but only if `ReturnValues` is specified as
      * `ALL_OLD` in the request. Each element consists of an attribute name and an attribute value.
      */
-    private $attributes = [];
+    private $attributes;
 
     /**
      * The capacity units consumed by the `PutItem` operation. The data returned includes the total provisioned throughput

src/Result/QueryOutput.php

@@ -22,7 +22,7 @@ class QueryOutput extends Result implements \IteratorAggregate
      * An array of item attributes that match the query criteria. Each element in this array consists of an attribute name
      * and the value for that attribute.
      */
-    private $items = [];
+    private $items;
 
     /**
      * The number of items in the response.
@@ -42,7 +42,7 @@ class QueryOutput extends Result implements \IteratorAggregate
      * The primary key of the item where the operation stopped, inclusive of the previous result set. Use this value to
      * start a new operation, excluding this value in the new request.
      */
-    private $lastEvaluatedKey = [];
+    private $lastEvaluatedKey;
 
     /**
      * The capacity units consumed by the `Query` operation. The data returned includes the total provisioned throughput

src/Result/ScanOutput.php

@@ -22,7 +22,7 @@ class ScanOutput extends Result implements \IteratorAggregate
      * An array of item attributes that match the scan criteria. Each element in this array consists of an attribute name
      * and the value for that attribute.
      */
-    private $items = [];
+    private $items;
 
     /**
      * The number of items in the response.
@@ -42,7 +42,7 @@ class ScanOutput extends Result implements \IteratorAggregate
      * The primary key of the item where the operation stopped, inclusive of the previous result set. Use this value to
      * start a new operation, excluding this value in the new request.
      */
-    private $lastEvaluatedKey = [];
+    private $lastEvaluatedKey;
 
     /**
      * The capacity units consumed by the `Scan` operation. The data returned includes the total provisioned throughput

src/Result/UpdateItemOutput.php

@@ -18,7 +18,7 @@ class UpdateItemOutput extends Result
      * A map of attribute values as they appear before or after the `UpdateItem` operation, as determined by the
      * `ReturnValues` parameter.
      */
-    private $attributes = [];
+    private $attributes;
 
     /**
      * The capacity units consumed by the `UpdateItem` operation. The data returned includes the total provisioned