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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 validated_element(x, tags=None, attrs=None):
 """Checks if the root element of an XML document or Element meets the supplied criteria. *tags* if specified is either a single allowable tag name or sequence of allowable alternatives *attrs* if specified is a sequence of required attributes, each of which may be a sequence of several allowable alternatives Raises :exc:`XMLError` if the requirements are not met. """

    ele = to_ele(x)
    if tags:
        if isinstance(tags, (str, bytes)):
            tags = [tags]
        if ele.tag not in tags:
            raise XMLError("Element [%s] does not meet requirement" % ele.tag)
    if attrs:
        for req in attrs:
            if isinstance(req, (str, bytes)): req = [req]
            for alt in req:
                if alt in ele.attrib:
                    break
            else:
                raise XMLError("Element [%s] does not have required attributes" % ele.tag)
    return ele