public Optional<ObjectNode> getVendorParams() {
        return Optional.ofNullable(this.vendorParams);
    }
Get the vendor-specific parameters of this test case.

<p>These are custom parameters that can be used to influence the
request for this test case.

<p>These parameters match the shape id returned by {@link #getVendorParamsShape()},
if present.

@see #getVendorParamsShape()
@return Returns the optionally present vendor-specific parameters.
smithy-smoke-test-traits/src/main/java/software/amazon/smithy/smoketests/traits/SmokeTestCase.java