protected void internalInit() {
super.internalInit();
CommonHelper.assertNotBlank("scope", this.scope);
CommonHelper.assertNotBlank("fields", this.fields);
StateApi20 api20 = new LinkedInApi20();
this.service = new LinkedInOAuth20ServiceImpl(api20, new OAuthConfig(this.key, this.secret, this.callbackUrl,
SignatureType.Header, this.scope, null),
this.connectTimeout, this.readTimeout, this.proxyHost,
this.proxyPort);
}