Method code for $connection<$root>.get_obj_suffix()

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arg @suffix;
var objname, tmp;

// Figure out the suffix from the arguments and child index.
[(suffix ?= 0)] = suffix;
if (suffix) {
    // so they dont confuse child_index:
    if (suffix.is_numeric())
        throw(~perm, "You cannot specify a numeric suffix.");

    // so we get correct symbols & it is always lowercase:
    suffix = lowercase(strsed(suffix, "[^a-z0-9_]+", "", "g"));
} else {
    // get the next valid objname
    objname = tostr((| .objname() |) || "unknown");
    tmp = tosym(objname);
    while ((| lookup(tmp) |)) {
        child_index++;
        tmp = tosym(objname + "_" + tostr(child_index));
    }
    suffix = tostr(child_index);
}
return suffix;

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// Created as a part of ColdCore, see: @help Credit