public Put withExpressionAttributeNames(java.util.Map<String, String> expressionAttributeNames) {
        setExpressionAttributeNames(expressionAttributeNames);
        return this;
    }
<p>
One or more substitution tokens for attribute names in an expression.
</p>

@param expressionAttributeNames
       One or more substitution tokens for attribute names in an expression.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-dynamodb/src/main/java/com/amazonaws/services/dynamodbv2/model/Put.java