anchor.diff:  ----
   $ grails --version
   
  -| Grails Version: 3.2.4
  -| Groovy Version: 2.4.7
  +| Grails Version: 4.0.1
   | JVM Version: 1.8.0_77
   ----
  
positive.code: ----
  $ grails --version
  
  | Grails Version: 3.2.4
  | Groovy Version: 2.4.7
  | JVM Version: 1.8.0_77
  ----
  
  
negative.code: $ curl -s "https://get.sdkman.io" | bash
  ----
  
  Once the installation is complete, install the latest version of Grails (this guide uses 4.0.1):
  
  [source, bash]
  ----
  $ sdk install grails 4.0.1
  ----
  
  `sdkman` will prompt you to choose whether to set this version as the default (choose 'yes').
  