public TextureKey(URL location, int minFilter, int maxFilter, boolean flipped) {
public TextureKey(URL location, int minFilter, int maxFilter, float anisoLevel, boolean flipped) {
  public TextureKey(URL location, int minFilter, int maxFilter, boolean flipped) {    m_location = location;    m_minFilter = minFilter;    m_maxFilter = maxFilter;    m_flipped = flipped;  }