core/src/main/java/org/sakaiproject/nakamura/api/lite/StorageClientUtils.java
public static String getAltField(String field, String streamId) {
        if (streamId == null) {
            return field;
        }
        return field + "/" + streamId;
    }
public static String getAltField(String field, String streamId) {
        if (streamId == null) {
            return field;
        }
        return field + "/" + streamId;
    }
Get the name of an alternative field for an alternative stream.

@param field
the fieldname
@param streamId
the alternative stream name
@return the alternative field name.