public void setEllipsisChar(char c) {
        block.setEllipsisChar(c);
        letters.invalidate();
        needRefresh = true;
    }
for setLineWrapType(LineWrapType.NoWrap),
set the last character when the text exceeds the bound.

@param c the character to indicate truncated text
jme3-core/src/main/java/com/jme3/font/BitmapText.java