public ShenYuTestCaseSpecBuilder addVerifier(final String endpoint, final Matcher<?> matcher, final Matcher<?>... matchers) {
            return addVerifier(Method.GET, endpoint, matcher, matchers);
        }
add verifier case spec.
@param endpoint endpoint
@param matcher matcher
@param matchers matchers
@return ShenYuTestCaseSpecBuilder
shenyu-e2e/shenyu-e2e-engine/src/main/java/org/apache/shenyu/e2e/engine/scenario/specification/ShenYuCaseSpec.java