code: public function setClassMapAuthoritative($classMapAuthoritative = false)
      {
          $this->classMapAuthoritative = (bool) $classMapAuthoritative;
          if ($this->classMapAuthoritative) {
              // Force optimizeAutoloader when classmap is authoritative
              $this->setOptimizeAutoloader(true);
          }
  
          return $this;
      }
docs: Whether or not generated autoloader considers the class map
  authoritative.
  
  @param  bool      $classMapAuthoritative
  @return Installer