code: protected function PSRPath(ClassName $className)
      {
          $this->typeCheck->PSRPath(func_get_args());
  
          return
              str_replace('\\', '/', $className->parent()->string()).
              '/'.
              str_replace('_', '/', $className->shortName()->string()).
              '.php'
          ;
      }
docs: @param ClassName $className
  
  @return string