public function addVariablesForRecipient(string $recipient, array $variables): self
    {
        $this->recipientVariables[$recipient] = $variables;

        return $this;
    }
public function addVariablesForRecipient(string $recipient, array $variables): self
    {
        $this->recipientVariables[$recipient] = $variables;

        return $this;
    }
public function addVariablesForRecipient ( string $ recipient , array $ variables ) : self { $ this -> recipientVariables [ $ recipient ] = $ variables ; return $ this ; }
Set variables for recipient.

@param string   $recipient
@param string[] $variables

@return $this
Set variables for recipient .