code: public Vector4d set(Vector2ic v, double z, double w) {
          return set(v.x(), v.y(), z, w);
      }
docs: Set the x and y components from the given <code>v</code>
  and the z and w components to the given <code>z</code> and <code>w</code>.
  
  @param v
  the {@link Vector2ic}
  @param z
  the z component
  @param w
  the w component
  @return this