function setIssuerException(/*callable*/ $callable)
    {
        if (!is_callable($callable))
            throw new \InvalidArgumentException(sprintf(
                'Issuer must be callable; given: (%s).'
                , \Poirot\Std\flatten($callable)
            ));
        
        $this->issuer_exception = $callable;
        return $this;
    }
function setIssuerException(/*callable*/ $callable)
    {
        if (!is_callable($callable))
            throw new \InvalidArgumentException(sprintf(
                'Issuer must be callable; given: (%s).'
                , \Poirot\Std\flatten($callable)
            ));
        
        $this->issuer_exception = $callable;
        return $this;
    }
function setIssuerException ( /*callable*/ $ callable ) { if ( ! is_callable ( $ callable ) ) throw new \ InvalidArgumentException ( sprintf ( 'Issuer must be callable; given: (%s).' , \ Poirot \ Std \ flatten ( $ callable ) ) ) ; $ this -> issuer_exception = $ callable ; return $ this ; }
Set Exception Issuer

callable:
function(exAuthentication $e)

@param callable $callable

@return $this
Set Exception Issuer