https://pub.dev/documentation/flutter_validators/latest/validators_boolean/isBoolean.html
isBoolean function - boolean library - Dart API
API docs for the isBoolean function from the boolean library, for the Dart programming language.
boolean libraryisbooleanfunctiondartapi
https://docs.oracle.com/en/cloud/saas/netsuite/ns-online-help/section_4434638340.html
NetSuite Applications Suite - util.isBoolean(obj)
NetSuite Applications Suite
netsuiteapplicationsutilisbooleanobj