How to define Activity return values in Java

Activity return values must be serializable and deserializable by the provided DataConverter.

The execute method for DynamicActivity can return type Object. Ensure that your Workflow or Client can handle an Object type return or is able to convert the Object type response.

• What is a Data Converter?
• Java DataConverter reference: https://www.javadoc.io/doc/io.temporal/temporal-sdk/latest/io/temporal/common/converter/DataConverter.html