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Description
I check KnpU\OAuth2ClientBundle\Client\OAuth2Client
line 107
$this->provider->getAccessToken('authorization_code', array_merge(['code' => $code], $options));
There is no way to create token as a grant, but this feature is provided from the main package
$accessToken = $provider->getAccessToken('client_credentials');
I will try to create new Clint for my use to provide this functionality
if this working with you I will create PR here