Fix the Go interface error by adding the missing method to your struct with the correct signature.
The error means your struct is missing the method required to satisfy the interface. Add the missing method Z to your struct with the exact signature defined in interface Y.
type X struct {
// fields
}
func (x *X) Z() {
// implementation
}
Ensure the receiver type (pointer vs value) matches the interface definition.
The "X does not implement Y (missing method Z)" error in Go happens when you try to use a custom type where a specific interface is expected, but your type is missing a required function. It is like trying to plug a square peg into a round hole; the shape (method) doesn't match the socket (interface). You fix it by adding the missing function to your type definition.