code: public Vector4i sub(int x, int y, int z, int w) {
          return sub(x, y, z, w, thisOrNew());
      }
docs: Subtract <code>(x, y, z, w)</code> from this.
  
  @param x
  the x component to subtract
  @param y
  the y component to subtract
  @param z
  the z component to subtract
  @param w
  the w component to subtract
  @return a vector holding the result