original_string: private function areNullableReturnTypesSupported(): bool
      {
          $testVersion = trim(PHPCompatibility\PHPCSHelper::getConfigData('testVersion') ?: '');
          if (!$testVersion) {
              return false;
          }
  
          preg_match('`^(\d+\.\d+)(?:\s*-\s*(?:\d+\.\d+)?)?$`', $testVersion, $matches);
          $min = $matches[1] ?? null;
  
          return $min && version_compare($min, '7.1', '>=');
      }
code: private function areNullableReturnTypesSupported(): bool
      {
          $testVersion = trim(PHPCompatibility\PHPCSHelper::getConfigData('testVersion') ?: '');
          if (!$testVersion) {
              return false;
          }
  
          preg_match('`^(\d+\.\d+)(?:\s*-\s*(?:\d+\.\d+)?)?$`', $testVersion, $matches);
          $min = $matches[1] ?? null;
  
          return $min && version_compare($min, '7.1', '>=');
      }
code_tokens: private function areNullableReturnTypesSupported ( ) : bool { $ testVersion = trim ( PHPCompatibility \ PHPCSHelper :: getConfigData ( 'testVersion' ) ? : '' ) ; if ( ! $ testVersion ) { return false ; } preg_match ( '`^(\d+\.\d+)(?:\s*-\s*(?:\d+\.\d+)?)?$`' , $ testVersion , $ matches ) ; $ min = $ matches [ 1 ] ?? null ; return $ min && version_compare ( $ min , '7.1' , '>=' ) ; }
docstring: Return true if _min_ supported version is PHP 7.1.
  
  @return bool
docstring_tokens: Return true if _min_ supported version is PHP 7 . 1 .