src/LightSaml/Credential/AbstractCredential.php
public function addKeyName($keyName)
    {
        $keyName = trim($keyName);
        if ($keyName) {
            $this->keyNames[] = $keyName;
        }

        return $this;
    }
public function addKeyName($keyName)
    {
        $keyName = trim($keyName);
        if ($keyName) {
            $this->keyNames[] = $keyName;
        }

        return $this;
    }
@param string $keyName

@return AbstractCredential