code: @Nullable
    public List<ExprRootNode> getAndRemoveGenderExprs() {
      List<ExprRootNode> genderExprs = this.genderExprs;
      this.genderExprs = null;
      return genderExprs;
    }
docs: Returns the list of expressions for gender values and sets that field to null.
  
  <p>Note that this node's command text will still contain the substring genders="...". We think
  this is okay since the command text is only used for reporting errors (in fact, it might be
  good as a reminder of how the msg was originally written).