This is a Browser Action API.
_assertFalse will do nothing if the condition passed to it is false
_assertFalse will log failures to the playback logs if the condition evaluated to true.
DO NOT USE THIS IN AN IF CONDITION as it does not return any value, and throws an exception if the condition is true
_assertFalse(condition, message)
The parameters are:
_assertFalse(1==2);
// does nothing
_assertFalse(1==1, "Some Log Message");
// throws exception and writes “Some Log Message” to logs.