Miroslav Sustek focused on backend development in PHP, dedicating his efforts to stabilizing and improving API correctness within the JetBrains/phpstorm-stubs repository. During this period, he addressed a critical bug in the Kafka Consumer API by correcting the return type of the KafkaConsumer::newTopic method to KafkaConsumerTopic. This adjustment aligned the stubs with rdkafka API expectations, reducing type-related errors in IDEs and static analysis tools. By ensuring accurate type hints, Miroslav enhanced the developer experience for those integrating Kafka topics in PHP projects. His work emphasized quality and correctness, prioritizing robust API surfaces over new feature development during the month.