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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _show_or_dump(self, dump=False, indent=3, lvl="", label_lvl="", first_call=True):
 # noqa: E501 """ Internal method that shows or dumps a hierarchical view of a packet. Called by show. :param dump: determine if it prints or returns the string value :param int indent: the size of indentation for each layer :param str lvl: additional information about the layer lvl :param str label_lvl: additional information about the layer fields :param first_call: determine if the current function is the first :return: return a hierarchical view if dump, else print it """


        if dump:
            from scapy.themes import AnsiColorTheme
            ct = AnsiColorTheme()  # No color for dump output
        else:
            ct = conf.color_theme
        s = "%s%s %s %s \n" % (label_lvl,
                               ct.punct("###["),
                               ct.layer_name(self.name),
                               ct.punct("]###"))
        for f in self.fields_desc:
            if isinstance(f, ConditionalField) and not f._evalcond(self):
                continue
            if isinstance(f, Emph) or f in conf.emph:
                ncol = ct.emph_field_name
                vcol = ct.emph_field_value
            else:
                ncol = ct.field_name
                vcol = ct.field_value
            fvalue = self.getfieldval(f.name)
            if isinstance(fvalue, Packet) or (f.islist and f.holds_packets and isinstance(fvalue, list)):  # noqa: E501
                s += "%s  \\%-10s\\\n" % (label_lvl + lvl, ncol(f.name))
                fvalue_gen = SetGen(fvalue, _iterpacket=0)
                for fvalue in fvalue_gen:
                    s += fvalue._show_or_dump(dump=dump, indent=indent, label_lvl=label_lvl + lvl + "   |", first_call=False)  # noqa: E501
            else:
                begn = "%s  %-10s%s " % (label_lvl + lvl,
                                         ncol(f.name),
                                         ct.punct("="),)
                reprval = f.i2repr(self, fvalue)
                if isinstance(reprval, str):
                    reprval = reprval.replace("\n", "\n" + " " * (len(label_lvl) +  # noqa: E501
                                                                  len(lvl) +
                                                                  len(f.name) +
                                                                  4))
                s += "%s%s\n" % (begn, vcol(reprval))
        if self.payload:
            s += self.payload._show_or_dump(dump=dump, indent=indent, lvl=lvl + (" " * indent * self.show_indent), label_lvl=label_lvl, first_call=False)  # noqa: E501

        if first_call and not dump:
            print(s)
        else:
            return s