public class GithubUser
{  
  private string FirstName {get; set;}
  private string LastName {get; set;}
  private string Location {get; set;} 
  private int Age {get;set;}

  public GithubUser ()
  {
    this.FirstName = "Vinícius";
    this.LastName = "Rodrigues";
    this.Location = "Minas Gerais, Brasil";
    this.Age = 21;
  }
}