original_string: public function mergeEnv()
      {
          $env = [];
          foreach ($this->installers as $installer) {
              $env = array_merge($env, $installer->getEnv());
          }
  
          return $env;
      }
code: public function mergeEnv()
      {
          $env = [];
          foreach ($this->installers as $installer) {
              $env = array_merge($env, $installer->getEnv());
          }
  
          return $env;
      }
code_tokens: public function mergeEnv ( ) { $ env = [ ] ; foreach ( $ this -> installers as $ installer ) { $ env = array_merge ( $ env , $ installer -> getEnv ( ) ) ; } return $ env ; }
docstring: Merge the environment variables from all installers.
  
  @return array
docstring_tokens: Merge the environment variables from all installers .