Represents bidirectional, both Java and Ruby, variables. Users don't instantiate
BiVariable type objects. Instead, users can get this type object from
after a variable is set to the map. Users can set variables
in Java program explicitly through put() methods in
or equivalents. However, variables in Ruby scripts are
set in the map implicitly. When variables and constants
are used in the script, those are automatically saved in the map converting to this type.
- Yoko Harada <firstname.lastname@example.org>