openapi2apigee proxy basepath issue

[#1]

openapi2apigee generateApi Bill -s BillingUsageApiSwagger.yaml -D -d .

I am using the above command to generate an APIProxy Bill.

I have

 basepath: /v1/accounts and 
 /paths : /usage

the generated proxy has

<BasePath>/Bill</BasePath>

and

<HTTPTargetConnection>
    <URL>https://FQDN/v1/accounts</URL>
  </HTTPTargetConnection>

Any ideas on how to fix that?