package au.gov.amsa.ais.router.model;
   
   import com.github.davidmoten.guavamini.Preconditions;
   
   public final class Authentication {
   
       private final String username;
       private final String password;
   
      private Authentication(String username, String password) {
          Preconditions.checkNotNull(username);
          Preconditions.checkNotNull(password);
          this.username = username;
          this.password = password;
      }
  
      public String username() {
          return username;
      }
  
      public String password() {
          return password;
      }
  
      public static Builder builder() {
          return new Builder();
      }
  
      public static class Builder {
  
          private String username;
          private String password;
  
          private Builder() {
          }
  
          public Builder username(String username) {
              this.username = username;
              return this;
          }
  
          public Builder password(String password) {
              this.password = password;
              return this;
          }
  
          public Authentication build() {
              return new Authentication(username, password);
          }
      }
  }