title: Private method naming convention
body: <p>Is there a convention for naming the private method that I have called "<code>_Add</code>" here? I am not a fan of the leading underscore but it is what one of my teammates suggests.</p>
  
  <pre><code>public Vector Add(Vector vector) {
      // check vector for null, and compare Length to vector.Length
      return _Add(vector);
  }
  
  public static Vector Add(Vector vector1, Vector vector2) {
      // check parameters for null, and compare Lengths
      Vector returnVector = vector1.Clone()
      return returnVector._Add(vector2);
  }
  
  private Vector _Add(Vector vector) {
      for (int index = 0; index &lt; Length; index++) {
          this[index] += vector[index];
      }
      return this;
  }
  </code></pre>