public abstract  int getNextVisualPositionFrom(JTextComponent t, int pos, Position.Bias b, int direction, Position.Bias[] biasRet);
public abstract int getNextVisualPositionFrom(JTextComponent tc, int pos, Position.Bias bias, int direction, Position.Bias[] outBias) throws BadLocationException;
    public abstract  int getNextVisualPositionFrom(JTextComponent t, 					    int pos,					    Position.Bias b, 					    int direction,					    Position.Bias[] biasRet);