public static SchemaChangeType getInstance(int code) {
        for (SchemaChangeType type : values()) {
            if (type.code == code) {
                return type;
            }
        }
        throw new IllegalArgumentException(String.format("Unsupported type of schema-change: %s for InLong", code));
    }
The code represents this schema change type
inlong-sort/sort-common/src/main/java/org/apache/inlong/sort/protocol/enums/SchemaChangeType.java