code: public DynamoDBQueryExpression<T> withExpressionAttributeNames(
              java.util.Map<String, String> expressionAttributeNames) {
          setExpressionAttributeNames(expressionAttributeNames);
          return this;
      }
docs: One or more substitution variables for simplifying complex expressions.
  
  @param expressionAttributeNames
  One or more substitution variables for simplifying complex
  expressions.
  
  @return A reference to this updated object so that method calls can be
  chained together.
  @see QueryRequest#withExpressionAttributeNames(Map)