public PageMapper Default <TPage>(params Action <SourcePage, TPage>[] mappers) where TPage : PageData
 {
     _maps[DefaultMapName] = new PageMap <TPage>(DefaultMapName, mappers);
     return(this);
 }
 public PageMapper Map <TPage>(string oldTypeName, params Action <SourcePage, TPage>[] mappers) where TPage : PageData
 {
     _maps[oldTypeName] = new PageMap <TPage>(oldTypeName, mappers);
     return(this);
 }