src/Callbacks/AbstractCallback.php
protected function appendExceptionSuffix($message = null, $filename = null, $lineNumber = null)
    {
        return $this->getSubject()-> appendExceptionSuffix($message, $filename, $lineNumber);
    }
protected function appendExceptionSuffix($message = null, $filename = null, $lineNumber = null)
    {
        return $this->getSubject()-> appendExceptionSuffix($message, $filename, $lineNumber);
    }
Append's the exception suffix containing filename and line number to the
passed message. If no message has been passed, only the suffix will be
returned.

@param string|null $message    The message to append the exception suffix to
@param string|null $filename   The filename used to create the suffix
@param string|null $lineNumber The line number used to create the suffx

@return string The message with the appended exception suffix