public ShenYuTestCaseSpecBuilder add(final Verifier verifier) {
            builder.add(verifier);
            return this;
        }
builder add verifier.
@param verifier verifier
@return ShenYuTestCaseSpecBuilder
shenyu-e2e/shenyu-e2e-engine/src/main/java/org/apache/shenyu/e2e/engine/scenario/specification/ShenYuCaseSpec.java