src/Helpers/Log.php
protected function write($message, $severity)
    {
        $message = sprintf('Acumulus %s: %s - %s', $this->getLibraryVersion(), $this->getSeverityString($severity), $message);
        error_log($message);
    }
protected function write($message, $severity)
    {
        $message = sprintf('Acumulus %s: %s - %s', $this->getLibraryVersion(), $this->getSeverityString($severity), $message);
        error_log($message);
    }
protected function write ( $ message , $ severity ) { $ message = sprintf ( 'Acumulus %s: %s - %s' , $ this -> getLibraryVersion ( ) , $ this -> getSeverityString ( $ severity ) , $ message ) ; error_log ( $ message ) ; }
Writes the message to the actual log sink.

This base implementation adds the name Acumulus, the version of this
library, and the severity and then sends the message to error_log().

Override if the web shop offers its own log mechanism.

@param string $message
@param int $severity
Writes the message to the actual log sink .