Gender.from constructor
Create a new Gender providing mainArgument
and the list of possible
clauses. Each clause is expected to be a list whose first element is a
variable name and whose second element is either a String or
a list of strings and Message or VariableSubstitution.
Implementation
Gender.from(String? mainArgument, List clauses, Message? parent)
: super.from(mainArgument, clauses, parent);