Update after review

Author: marki1an

src/test/groovy/org/prebid/server/functional/testcontainers/scaffolding/CurrencyConversion.groovy

@@ -34,6 +34,6 @@ class CurrencyConversion extends NetworkScaffolding {
 
     @Override
     protected RequestPatternBuilder getRequest(String value) {
-        return null
+        throw new UnsupportedOperationException()
     }
 }

src/test/groovy/org/prebid/server/functional/testcontainers/scaffolding/HttpSettings.groovy

@@ -52,9 +52,7 @@ class HttpSettings extends NetworkScaffolding {
                 .withHeader("Content-Type", "application/json")
                 .withBody(encode(responseModel))
 
-        headers.each { k, v ->
-            responseBuilder.withHeader(k, v)
-        }
+        headers.each { responseBuilder.withHeader(it.key, it.value) }
 
         wireMockClient.register(new StubMapping(getRfcRequestPattern(value).build(), responseBuilder.build()))
     }

src/test/groovy/org/prebid/server/functional/testcontainers/scaffolding/NetworkScaffolding.groovy

@@ -63,9 +63,7 @@ abstract class NetworkScaffolding implements ObjectMapperWrapper {
                 .withHeader("Content-Type", "application/json")
                 .withBody(encode(responseModel))
 
-        headers.each { k, v ->
-            responseBuilder.withHeader(k, v)
-        }
+        headers.each { responseBuilder.withHeader(it.key, it.value) }
 
         wireMockClient.register(new StubMapping(getRequest(value).build(), responseBuilder.build()))
     }

src/test/groovy/org/prebid/server/functional/testcontainers/scaffolding/PrebidCache.groovy

@@ -62,7 +62,7 @@ class PrebidCache extends NetworkScaffolding {
     @Override
     protected RequestPatternBuilder getRequest(String impId) {
         postRequestedFor(urlEqualTo(CACHE_ENDPOINT))
-                .withRequestBody(matchingJsonPath("\$.puts[?(@.value.impid == '" + impId + "')]"))
+                .withRequestBody(matchingJsonPath("\$.puts[?(@.value.impid == '$impId')]"))
     }
 
 

src/test/groovy/org/prebid/server/functional/testcontainers/scaffolding/VendorList.groovy

@@ -34,7 +34,7 @@ class VendorList extends NetworkScaffolding {
 
     @Override
     protected RequestPatternBuilder getRequest(String value) {
-        return null
+        throw new UnsupportedOperationException()
     }
 
     void setResponse(TcfPolicyVersion tcfPolicyVersion = TCF_POLICY_V2,