Besides ImmutableErrorDetails, there seem to be some classes that cannot be imported, such as ：

Besides ImmutableErrorDetails, there seem to be some classes that cannot be imported, such as ：
com.amazonaws.appflow.custom.connector.model.metadata.ImmutableDescribeEntityResponse
com.amazonaws.appflow.custom.connector.model.metadata.ImmutableListEntitiesResponse

_Originally posted by @Yassin-fan in https://github.com/awslabs/aws-appflow-custom-connector-java/issues/59#issuecomment-1577927566_

Start by locating the definitions and build references for ImmutableErrorDetails, ImmutableDescribeEntityResponse, and ImmutableListEntitiesResponse in the Java project. Reproduce the import failures with the project’s normal build or test command and trace whether these classes are generated or omitted; done means the affected classes can be imported successfully.

Written by the indexing model from the issue text.