Method hasVersion

fdbclient/include/fdbclient/VersionVector.h:96–99

	}

	bool hasVersion(const Tag& tag) const {
		ASSERT(tag != invalidTag);
		return versions.find(tag) != versions.end();
	}

	// @pre assumes that the given tag has an entry in the version vector.
	Version getVersion(const Tag& tag) const {