Move assignment is not noexcept because close may throw.

Message assignment, for assertion streaming support.

We have to define this for UnorderedPointwise() to compile in C++98 mode, as it puts BoundSecondMatcher instances in a vector, which requires the elem

Returns true if and only if rhs references the same expectation as this object does.

Returns true if and only if rhs contains the same set of Expectation objects as this does.

Returns an iterator to the beginning of the output range.