Github user neykov commented on a diff in the pull request:

    https://github.com/apache/brooklyn-docs/pull/113#discussion_r81114384
  
    --- Diff: guide/java/archetype.md ---
    @@ -26,11 +26,13 @@ Alternatively, all options can be supplied at the 
command line. For example,
     if creating a project named "autobrick" for "com.acme":
     
     {% highlight bash %}
    +# BROOKLYN_VERSION={{ site.brooklyn-version }}
     $ mvn archetype:generate \
        -DarchetypeGroupId=org.apache.brooklyn \
        -DarchetypeArtifactId=brooklyn-archetype-quickstart \
    -   -DarchetypeVersion={{ site.brooklyn-version }} \
    -   -DgroupId=com.acme -DartifactId=autobrick \
    +   -DarchetypeVersion=${BROOKLYN_VERSION} \
    --- End diff --
    
    Making this an env variable makes the example non-copy-pasteable. The user 
needs to edit it before executing.
    Prefer the old version, or if you really want to make the version stand out 
change to something like:
    
    ```
    $ BROOKLYN_VERSION={{ site.brooklyn-version }} \
       mvn archetype:generate \
        -DarchetypeGroupId=org.apache.brooklyn \
        -DarchetypeArtifactId=brooklyn-archetype-quickstart \
        -DarchetypeVersion=${BROOKLYN_VERSION} \
        -DgroupId=com.acme \
        -DartifactId=autobrick \
        -Dversion=0.1.0-SNAPSHOT \
        -DpackageName=com.acme.autobrick \
        -DinteractiveMode=false
    ```


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