}
	return
}

// FirstOrCreate finds the first matching record, otherwise if not found creates a new instance with given conds.
// Each conds must be a struct or map.
//
// Using FirstOrCreate in conjunction with Assign will result in an update to the database even if the record exists.
//
//	// assign an email if the record is not found

type ListExpr struct {
	Elements []*Expression `parser:"\"(\" @@ ( \",\" @@ )* \")\" | \"[\" @@ ( \",\" @@ )* \"]\""`
}

// AndCondition represents logical conjunction of clauses
type AndCondition struct {
	Condition []*Condition `parser:"@@ ( \"AND\" @@ )*"`
}

// Condition represents a negation or a condition operand
type Condition struct {

		{`/p/q/r/s/t`, true},
	}
	dir := t.TempDir()

	// Instantiate posix object to manage a disk
	fs, err := newLocalXLStorage(dir)
	if err != nil {
		t.Fatal(err)
	}

	// Create volume to use in conjunction with other StorageAPI's file API(s)
	err = fs.MakeVol(context.Background(), "voldir")
	if err != nil {
		t.Fatal(err)
	}

	for i, test := range testCases {
		t.Run(fmt.Sprint(i), func(t *testing.T) {