与terraform go-SDK集成

I am trying to integrate Terraform go-SDK with my go-code where I already have an terraform template file and I need to create the infrastructure by importing that file to the go-SDK. I am not able to find any related documents. I tried with the godoc for terraform. With a little understanding, I tried to implement a simple terraform template. My terraform template file is,

provider "aws" {
  access_key = "xxxx"
  secret_key = "xxxx"
  region     = "xxxx"
}

resource "aws_instance" "example" {
  ami           = "ami-xxxx"
  instance_type = "t2.micro"

 # The name of our SSH keypair.
  key_name      = "xxxx" 

 # Security groupID
  vpc_security_group_ids = ["sg-xxxx"]

 #Subnet ID
  subnet_id = "subnet-xxxx"

}

I tried via commandLine and I am able to bring up an instance with this file. I tried the same via my go-code. My understanding is that I need to create a Context in order to apply it. For creating a Context, I need a module.Tree. So I tried creating a module.Tree with config.Config. I imported the above terraform template file to my go-code to create a config and a tree. My go-code looks like,

package main

import (
   "github.com/hashicorp/terraform/config"
   "github.com/hashicorp/terraform/config/module"
   "fmt"
)

func main() {
   con, err := config.LoadFile(path to .tf file)
   fmt.Println("Config: ", con)
   fmt.Println("Error: ", err)

   fmt.Println("Validate: ", con.Validate())

   tree := module.NewTree("testTree", con)
   fmt.Println("Tree: ", tree.String())
}

When I execute my code, I am not getting any errors for loading the config from file, or validating the same. But I am getting the output as "tree not loaded",

Output:
Config:  &{ <nil> <nil> [] [0xc4201cd0c0] [0xc4201f03c0] [] [] [] []}
Error:  <nil>
Validate:  <nil>
Tree:  testTree  not loaded

Can someone help me out to implement this? Thanks in advance.