sdk/src/com/socialize/oauth/signpost/AbstractOAuthConsumer.java
protected void collectHeaderParameters(HttpRequest request, HttpParameters out) {
        HttpParameters headerParams = OAuth.oauthHeaderToParamsMap(request.getHeader(OAuth.HTTP_AUTHORIZATION_HEADER));
        out.putAll(headerParams, false);
    }
protected void collectHeaderParameters(HttpRequest request, HttpParameters out) {
        HttpParameters headerParams = OAuth.oauthHeaderToParamsMap(request.getHeader(OAuth.HTTP_AUTHORIZATION_HEADER));
        out.putAll(headerParams, false);
    }
Collects OAuth Authorization header parameters as per OAuth Core 1.0 spec
section 9.1.1