*/
    public static String defaultString(final String str, final String defaultStr) {
        return str == null ? defaultStr : str;
    }

    /**
     * <p>Checks if the CharSequence contains only ASCII printable characters.</p>
     *
     * <p>{@code null} will return {@code false}.
     * An empty CharSequence (length()=0) will return {@code true}.</p>
     *
     * <pre>

import java.io.Writer;
import java.util.Arrays;
import java.util.Objects;
import org.jspecify.annotations.Nullable;

/**
 * A binary encoding scheme for reversibly translating between byte sequences and printable ASCII
 * strings. This class includes several constants for encoding schemes specified by <a
 * href="http://tools.ietf.org/html/rfc4648">RFC 4648</a>. For example, the expression:
 *
 * {@snippet :

		Tag:  `gorm:"-"`,
	})

	if relation.JoinTable, err = Parse(reflect.New(reflect.StructOf(joinTableFields)).Interface(), schema.cacheStore,
		schema.namer); err != nil {
		schema.err = err
	}
	relation.JoinTable.Name = many2many
	relation.JoinTable.Table = schema.namer.JoinTableName(many2many)
	relation.JoinTable.PrimaryFields = make([]*Field, 0, len(relation.JoinTable.Fields))

	relName := relation.Schema.Name

	}

	// Left JOIN + Alias WHERE
	result, err = db.Joins(clause.LeftJoin.Association("Company").As("t"), func(db gorm.JoinBuilder, joinTable clause.Table, curTable clause.Table) error {
		if joinTable.Name != "t" {
			t.Fatalf("Join table should be t, but got %v", joinTable.Name)
		}
		db.Where("?.name = ?", joinTable, u.Company.Name)
		return nil
	}).Where(map[string]any{"name": u.Name}).First(ctx)
	if err != nil {

	)

	if association.Relationship.JoinTable != nil {
		if !tx.Statement.Unscoped && len(association.Relationship.JoinTable.QueryClauses) > 0 {
			joinStmt := Statement{DB: tx, Context: tx.Statement.Context, Schema: association.Relationship.JoinTable, Table: association.Relationship.JoinTable.Table, Clauses: map[string]clause.Clause{}}
			for _, queryClause := range association.Relationship.JoinTable.QueryClauses {
				joinStmt.AddClause(queryClause)

	q.limitPerRecord = num
	return q
}

func (c chainG[T]) Joins(jt clause.JoinTarget, on func(db JoinBuilder, joinTable clause.Table, curTable clause.Table) error) ChainInterface[T] {
	return c.with(func(db *DB) *DB {
		if jt.Table == "" {
			jt.Table = clause.JoinTable(strings.Split(jt.Association, ".")...).Name
		}

		q := joinBuilder{db: db.Session(&Session{NewDB: true, Initialized: true}).Table(jt.Table)}

import org.dbflute.Entity;
import org.dbflute.bhv.AbstractBehaviorWritable;
import org.dbflute.bhv.readable.EntityRowHandler;
import org.dbflute.bhv.writable.DeleteOption;
import org.dbflute.bhv.writable.InsertOption;
import org.dbflute.bhv.writable.UpdateOption;
import org.dbflute.cbean.ConditionBean;
import org.dbflute.cbean.coption.CursorSelectOption;
import org.dbflute.cbean.result.ListResultBean;

import org.dbflute.Entity;
import org.dbflute.bhv.AbstractBehaviorWritable;
import org.dbflute.bhv.readable.EntityRowHandler;
import org.dbflute.bhv.writable.DeleteOption;
import org.dbflute.bhv.writable.InsertOption;
import org.dbflute.bhv.writable.UpdateOption;
import org.dbflute.cbean.ConditionBean;
import org.dbflute.cbean.coption.CursorSelectOption;
import org.dbflute.cbean.result.ListResultBean;

import org.dbflute.Entity;
import org.dbflute.bhv.AbstractBehaviorWritable;
import org.dbflute.bhv.readable.EntityRowHandler;
import org.dbflute.bhv.writable.DeleteOption;
import org.dbflute.bhv.writable.InsertOption;
import org.dbflute.bhv.writable.UpdateOption;
import org.dbflute.cbean.ConditionBean;
import org.dbflute.cbean.coption.CursorSelectOption;
import org.dbflute.cbean.result.ListResultBean;

        File tempFile = ResponseDataUtil.createResponseBodyFile(responseData);

        assertNotNull(tempFile);
        assertTrue(tempFile.exists());

        // Verify file permissions (readable and writable by owner)
        assertTrue(tempFile.canRead());
        assertTrue(tempFile.canWrite());

        // Clean up
        tempFile.delete();
    }