MavenCoreFacet should provide ability to invoke Maven native/embedded, not MavenPlugin

   /**
    * Execute a command using the embedded Maven shell. Return the exit status code. 0 = success, anything else =
    * failure.
    */
   public boolean executeMavenEmbedded(String[] parameters);

   /**
    * Execute a command using the embedded Maven shell, using the given PrintStreams for output and error output. Return
    * the exit status code. 0 = success, anything else = failure.
    */
   boolean executeMavenEmbedded(PrintStream out, PrintStream err, String[] parameters);

   /**
    * Execute a command using the native Maven installation. If native Maven is not available, fall back to the embedded
    * Maven provider built in to Forge.
    */
   public void executeMaven(ShellPrintWriter out, String[] parameters);