class UpdateChangeSetChecksumGenerator extends AbstractSqlGenerator<UpdateChangeSetChecksumStatement> {
    @Override
    public ValidationErrors validate(UpdateChangeSetChecksumStatement statement, Database database, SqlGeneratorChain sqlGeneratorChain) {
        ValidationErrors validationErrors = new ValidationErrors();
        validationErrors.checkRequiredField("changeSet", statement.getChangeSet());

        return validationErrors;
    }

    @Override
    public Sql[] generateSql(UpdateChangeSetChecksumStatement statement, Database database, SqlGeneratorChain sqlGeneratorChain) {<FILL_FUNCTION_BODY>}

    private String getFilePath(ChangeSet changeSet) {
        if (StringUtil.isNotEmpty(changeSet.getStoredFilePath())) {
            return changeSet.getStoredFilePath();
        }
        return changeSet.getFilePath();
    }
}

        ChangeSet changeSet = statement.getChangeSet();
        ObjectQuotingStrategy currentStrategy = database.getObjectQuotingStrategy();
        database.setObjectQuotingStrategy(ObjectQuotingStrategy.LEGACY);
        try {
            SqlStatement runStatement = null;
            runStatement = new UpdateStatement(database.getLiquibaseCatalogName(), database.getLiquibaseSchemaName(), database.getDatabaseChangeLogTableName())
                    .addNewColumnValue("MD5SUM", changeSet.generateCheckSum(ChecksumVersion.latest()).toString())
                    .setWhereClause(database.escapeObjectName("ID", LiquibaseColumn.class) + " = ? " +
                            "AND " + database.escapeObjectName("AUTHOR", LiquibaseColumn.class) + " = ? " +
                            "AND " + database.escapeObjectName("FILENAME", LiquibaseColumn.class) + " = ?")
                    .addWhereParameters(changeSet.getId(), changeSet.getAuthor(), this.getFilePath(changeSet));

            return SqlGeneratorFactory.getInstance().generateSql(runStatement, database);
        } finally {
            database.setObjectQuotingStrategy(currentStrategy);
        }
    
<methods>public non-sealed void <init>() ,public boolean generateRollbackStatementsIsVolatile(liquibase.database.Database) ,public boolean generateStatementsIsVolatile(liquibase.database.Database) ,public int getPriority() ,public boolean looksLikeFunctionCall(java.lang.String, liquibase.database.Database) ,public boolean supports(liquibase.statement.core.UpdateChangeSetChecksumStatement, liquibase.database.Database) ,public liquibase.exception.Warnings warn(liquibase.statement.core.UpdateChangeSetChecksumStatement, liquibase.database.Database, SqlGeneratorChain<liquibase.statement.core.UpdateChangeSetChecksumStatement>) <variables>