code: public boolean recordThrowDescription(
        JSTypeExpression type, String description) {
      if (currentInfo.documentThrows(type, description)) {
        populated = true;
        return true;
      } else {
        return false;
      }
    }
docs: Records a throw type's description.
  
  @return {@code true} if the type's description was recorded and
  {@code false} if a description with the same type was already defined