OauthAuthorization workflow not properly parsed

[fjtirado]

When parsing the workflow definition below, The HTTP task is not identified as such.

document:
  dsl: '1.0.0-alpha5'
  namespace: examples
  name: oauth2-authentication
  version: '0.1.0'
do:
  - getPet:
      call: http
      with:
        method: get
        endpoint:
          uri: https://petstore.swagger.io/v2/pet/{petId}
          authentication:
            oauth2:
              authority: http://keycloak/realms/fake-authority
              endpoints: #optional
                token: /auth/token #defaults to /oauth2/token
                introspection: /auth/introspect #defaults to /oauth2/introspect
              grant: client_credentials
              client:
                id: workflow-runtime-id
                secret: workflow-runtime-secret

The POJO generator is not properly handling this part of the schema