def METHOD_NAME(glyph_data, data):
    """
    Pillow only looks for glyphs in the font used so we need to make sure our
    font has the glygh.  Although we could substitute a glyph from another font
    eg symbola but this adds more complexity and is of limited value.
    """
    def check_glyph(char):
        for cmap in glyph_data["cmap"].tables:
            if cmap.isUnicode():
                if char in cmap.cmap:
                    return True
        return False
    for part in data:
        text = part.get("full_text", "")
        for char in text:
            if not check_glyph(ord(char)):
                # we have not found a character in the font
                print("{} ({}) missing".format(char, ord(char)))
                return True
    return False