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;
    }
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.
Get the name of an alternative field for an alternative stream .