sdk/src/com/socialize/oauth/signpost/signature/SignatureBaseString.java
public String normalizeRequestParameters() throws IOException {
        if (requestParameters == null) {
            return "";
        }

        StringBuilder sb = new StringBuilder();
        Iterator<String> iter = requestParameters.keySet().iterator();

        for (int i = 0; iter.hasNext(); i++) {
            String param = iter.next();

            if (OAuth.OAUTH_SIGNATURE.equals(param) || "realm".equals(param)) {
                continue;
            }

            if (i > 0) {
                sb.append("&");
            }

            sb.append(requestParameters.getAsQueryString(param));
        }
        return sb.toString();
    }
public String normalizeRequestParameters() throws IOException {
        if (requestParameters == null) {
            return "";
        }

        StringBuilder sb = new StringBuilder();
        Iterator<String> iter = requestParameters.keySet().iterator();

        for (int i = 0; iter.hasNext(); i++) {
            String param = iter.next();

            if (OAuth.OAUTH_SIGNATURE.equals(param) || "realm".equals(param)) {
                continue;
            }

            if (i > 0) {
                sb.append("&");
            }

            sb.append(requestParameters.getAsQueryString(param));
        }
        return sb.toString();
    }
Normalizes the set of request parameters this instance was configured
with, as per OAuth spec section 9.1.1.

@param parameters
the set of request parameters
@return the normalized params string
@throws IOException