[JAVA] generating swagger java cient api for Matrix synapse client-server doesnt compile

Hii
Tried to use https://github.com/swagger-api/swagger-codegen

I tried the master version and 2.4.0 version and 2.3.0 version.

 java -jar /usr/local/lib/java/swagger-codegen-cli.jar generate -i  https://matrix.org/docs/api/client-server/json/api-docs.json -l java

and then tried to compile the project using gradle build.

the generated API doesn't compile, it has stuff like this:

@ApiModel(description = "The push rule.")
@javax.annotation.Generated(value = "io.swagger.codegen.languages.JavaClientCodegen", date = "2019-01-06T21:52:34.611+02:00")
public class InlineResponse20026 {
  @SerializedName("actions")
  private  actions = ;

  @SerializedName("conditions")
  private List<Object> conditions = null;

It's possible that codegen could be broken.

related issue https://github.com/swagger-api/swagger-codegen/issues/5276#issue-218674758

Reproduce the report with the shown swagger-codegen CLI command, the Matrix client-server api-docs.json input, and the Java generator. Inspect the generated InlineResponse20026 class and run Gradle build; done means the generated Java project compiles without invalid declarations such as the reported actions field.