Example of a method call on a type.

main.go

package main

type Type struct{}

func (Type) foo(string) {}

func main() {
	var t Type
	t.foo("")
	Type.foo(t, "")
}

Now I understand..... using interfaces, with this code, there's an error on line fmt.Println(miintf.saludar("que tal"))

package main

import (
	"fmt"
)

type miintf interface {
	saludar(hola string) string
}

type objeto struct {
	titulo string
}

func (obj objeto) saludar(hola string) string {
	return hola + "adios"
}


func main() {
	var myobj objeto
	fmt.Println(myobj.saludar("how are you"))
	fmt.Println(miintf.saludar(myobj, "como estas"))	
	
	
	fmt.Println(miintf.saludar("que tal"))
}

This is the error

./prog.go:26:28: not enough arguments in call to method expression miintf.saludar
	have (string)
	want (miintf, string)