def __mul__(self, other):
        """
        Implementation of * operator, allows use of ``expr * 3`` in place of
        ``expr + expr + expr``.  Expressions may also me multiplied by a 2-integer
        tuple, similar to ``{min, max}`` multipliers in regular expressions.  Tuples
        may also include ``None`` as in:
         - ``expr*(n, None)`` or ``expr*(n, )`` is equivalent
              to ``expr*n + ZeroOrMore(expr)``
              (read as "at least n instances of ``expr``")
         - ``expr*(None, n)`` is equivalent to ``expr*(0, n)``
              (read as "0 to n instances of ``expr``")
         - ``expr*(None, None)`` is equivalent to ``ZeroOrMore(expr)``
         - ``expr*(1, None)`` is equivalent to ``OneOrMore(expr)``

        Note that ``expr*(None, n)`` does not raise an exception if
        more than n exprs exist in the input stream; that is,
        ``expr*(None, n)`` does not enforce a maximum number of expr
        occurrences.  If this behavior is desired, then write
        ``expr*(None, n) + ~expr``
        """
        if other is Ellipsis:
            other = (0, None)
        elif isinstance(other, tuple) and other[:1] == (Ellipsis,):
            other = ((0, ) + other[1:] + (None,))[:2]

        if isinstance(other, int):
            minElements, optElements = other, 0
        elif isinstance(other, tuple):
            other = tuple(o if o is not Ellipsis else None for o in other)
            other = (other + (None, None))[:2]
            if other[0] is None:
                other = (0, other[1])
            if isinstance(other[0], int) and other[1] is None:
                if other[0] == 0:
                    return ZeroOrMore(self)
                if other[0] == 1:
                    return OneOrMore(self)
                else:
                    return self * other[0] + ZeroOrMore(self)
            elif isinstance(other[0], int) and isinstance(other[1], int):
                minElements, optElements = other
                optElements -= minElements
            else:
                raise TypeError("cannot multiply 'ParserElement' and ('%s', '%s') objects", type(other[0]), type(other[1]))
        else:
            raise TypeError("cannot multiply 'ParserElement' and '%s' objects", type(other))

        if minElements < 0:
            raise ValueError("cannot multiply ParserElement by negative value")
        if optElements < 0:
            raise ValueError("second tuple value must be greater or equal to first tuple value")
        if minElements == optElements == 0:
            raise ValueError("cannot multiply ParserElement by 0 or (0, 0)")

        if optElements:
            def makeOptionalList(n):
                if n > 1:
                    return Optional(self + makeOptionalList(n - 1))
                else:
                    return Optional(self)
            if minElements:
                if minElements == 1:
                    ret = self + makeOptionalList(optElements)
                else:
                    ret = And([self] * minElements) + makeOptionalList(optElements)
            else:
                ret = makeOptionalList(optElements)
        else:
            if minElements == 1:
                ret = self
            else:
                ret = And([self] * minElements)
        return ret

        Implementation of * operator, allows use of ``expr * 3`` in place of
        ``expr + expr + expr``.  Expressions may also me multiplied by a 2-integer
        tuple, similar to ``{min, max}`` multipliers in regular expressions.  Tuples
        may also include ``None`` as in:
         - ``expr*(n, None)`` or ``expr*(n, )`` is equivalent
              to ``expr*n + ZeroOrMore(expr)``
              (read as "at least n instances of ``expr``")
         - ``expr*(None, n)`` is equivalent to ``expr*(0, n)``
              (read as "0 to n instances of ``expr``")
         - ``expr*(None, None)`` is equivalent to ``ZeroOrMore(expr)``
         - ``expr*(1, None)`` is equivalent to ``OneOrMore(expr)``

        Note that ``expr*(None, n)`` does not raise an exception if
        more than n exprs exist in the input stream; that is,
        ``expr*(None, n)`` does not enforce a maximum number of expr
        occurrences.  If this behavior is desired, then write
        ``expr*(None, n) + ~expr``
        
product/gradle-plugin/src/main/python/pip/_vendor/pyparsing.py