public static String getTableName(SourceRecord element) {
        Struct value = (Struct) element.value();
        Struct source = value.getStruct(FieldName.SOURCE);
        return source.getString(TABLE_NAME);
    }
Returns a split which contain the specific key.

@param splitInfos split info list.
@param target the specific key.
@return A split which contain the specific key.
inlong-sort/sort-flink/sort-flink-v1.13/sort-connectors/mysql-cdc/src/main/java/org/apache/inlong/sort/cdc/mysql/source/utils/RecordUtils.java