public static Specification<PerfTest> hasTag(final String tagValue) {
		return (Specification<PerfTest>) (root, query, cb) -> {
			SetJoin<Object, Object> join = root.joinSet("tags");
			return cb.equal(join.get("tagValue"), tagValue);
		};
	}
Get the {@link Specification} checking if the {@link PerfTest#getTags()} has the given tagValue.

@param tagValue tagValue
@return {@link Specification}
ngrinder-controller/src/main/java/org/ngrinder/perftest/repository/PerfTestSpecification.java