9use Psr\Log\LoggerInterface;
40 if ( !isset( $this->singletons[$channel] ) ) {
41 $this->singletons[$channel] =
new LegacyLogger( $channel );
43 return $this->singletons[$channel];
53 $ret = $this->singletons[$channel] ??
null;
54 $this->singletons[$channel] = $logger;