relation.References = append(relation.References, &Reference{
					PrimaryKey: rf,
					ForeignKey: f,
				})
			}
		}
	}
}

type guessLevel int

const (
	guessGuess guessLevel = iota
	guessBelongs
	guessEmbeddedBelongs
	guessHas
	guessEmbeddedHas
)

func (schema *Schema) guessRelation(relation *Relationship, field *Field, cgl guessLevel) {
	var (

	MagentaBold = "\033[35;1m"
	RedBold     = "\033[31;1m"
	YellowBold  = "\033[33;1m"
)

// LogLevel log level
type LogLevel int

const (
	// Silent silent log level
	Silent LogLevel = iota + 1
	// Error error log level
	Error
	// Warn warn log level
	Warn
	// Info info log level
	Info
)

// Writer log writer interface
type Writer interface {
	Printf(string, ...interface{})
}