public void setKey(java.util.Map<String, AttributeValue> key) {
        this.key = key;
    }
<p>
A map of attribute names to <code>AttributeValue</code> objects, representing the primary key of the item to
delete.
</p>
<p>
For the primary key, you must provide all of the key attributes. For example, with a simple primary key, you only
need to provide a value for the partition key. For a composite primary key, you must provide values for both the
partition key and the sort key.
</p>

@param key
       A map of attribute names to <code>AttributeValue</code> objects, representing the primary key of the item
       to delete.</p>
       <p>
       For the primary key, you must provide all of the key attributes. For example, with a simple primary key,
       you only need to provide a value for the partition key. For a composite primary key, you must provide
       values for both the partition key and the sort key.
aws-java-sdk-dynamodb/src/main/java/com/amazonaws/services/dynamodbv2/model/DeleteItemRequest.java