public ShenYuBeforeEachSpecBuilder waiting(final Method method, final String endpoint, final ResponseSpecification expected) {
            this.waiting = (HttpWaiting) supplier -> WaitForHelper.waitForEffecting(supplier, method, endpoint, expected);
            return this;
        }
builder set waiting.
@param method method
@param endpoint endpoint
@param expected expected
@return ShenYuBeforeEachSpecBuilder
shenyu-e2e/shenyu-e2e-engine/src/main/java/org/apache/shenyu/e2e/engine/scenario/specification/ShenYuBeforeEachSpec.java