microsoft-azure-storage/src/com/microsoft/azure/storage/core/Utility.java
public static String formatETag(final String etag) {
        if (etag.startsWith("\"") && etag.endsWith("\"")) {
            return etag;
        }
        else {
            return String.format("\"%s\"", etag);
        }
    }
public static String formatETag(final String etag) {
        if (etag.startsWith("\"") && etag.endsWith("\"")) {
            return etag;
        }
        else {
            return String.format("\"%s\"", etag);
        }
    }
Reads character data for the Etag element from an XML stream reader.

@param xmlr
An <code>XMLStreamReader</code> object that represents the source XML stream reader.

@return A <code>String</code> that represents the character data for the Etag element.