anchor.diff:  
   === Identity comparison operators
   
  -Both `===` and `!==` are supported which are the same as calling the `is()` method.
  +Both `===` and `!==` are supported which are the same as calling the `is()` method,
  +and negating a call to the `is()` method respectively.
   
   [source,groovy]
   --------------------------------------
  
positive.code: [width="80%",align="center"]
  |===
  a| NOTE: _WARNING:_
  Material on this page is still under development! We are currently creating alpha versions of Groovy 3.0 with a goal of gathering feedback on the language changes from our community. In addition, the alpha versions assist other projects and tool vendors within the Groovy ecosystem to begin assessing the impact of moving to/supporting Groovy 3.0. Caution should be exercised if using new features as the details may change before final release.)
  |===
  
  [[Groovy3.0releasenotes-Parrot]]
  
negative.code: === Method references
  
  The Java 8 method reference syntax using the double colon syntax is now supported.
  Let's first look at some of the supported cases before coming back to some implementation details.
  
  The following examples illustrate referencing both static and instance methods of a class:
  
  