message: update cdn java md
diff: @@ -4,7 +4,6 @@ These settings apply only when `--java` is specified on the command line.
  Please also specify `--azure-libraries-for-java-folder=<path to the root directory of your azure-libraries-for-java clone>`.
  ``` yaml $(java)
  -java:
  azure-arm: true
  fluent: true
  namespace: com.microsoft.azure.management.cdn
  @@ -12,3 +11,23 @@ java:
  payload-flattening-threshold: 1
  output-folder: $(azure-libraries-for-java-folder)/azure-mgmt-cdn
  ```
  +
  +### Java multi-api
  +
  +``` yaml $(java) && $(multiapi)
  +batch:
  + - tag: package-2020-04
  +```
  +
  +### Tag: package-2020-04 and java
  +
  +These settings apply only when `--tag=package-2020-04 --java` is specified on the command line.
  +Please also specify `--azure-libraries-for-java=<path to the root directory of your azure-sdk-for-java clone>`.
  +
  +``` yaml $(tag) == 'package-2020-04' && $(java) && $(multiapi)
  +java:
  + namespace: com.microsoft.azure.management.cdn.v2020_04_15
  + output-folder: $(azure-libraries-for-java-folder)/sdk/cdn/mgmt-v2020_04_15
  +regenerate-manager: true
  +generate-interface: true
  +```
  \ No newline at end of file
  