feat: omit endpoint params from generation in the client interface

smithy-typescript-codegen/src/main/java/software/amazon/smithy/typescript/codegen/endpointsV2/EndpointsV2Generator.java

@@ -117,7 +117,10 @@ private void generateEndpointParameters() {
                         RuleSetParameterFinder ruleSetParameterFinder = new RuleSetParameterFinder(service);
 
                         Map<String, String> clientInputParams = ruleSetParameterFinder.getClientContextParams();
-                        clientInputParams.putAll(ruleSetParameterFinder.getBuiltInParams());
+                        //Omit Endpoint params that should not be a part of the ClientInputEndpointParameters interface
+                        Map<String, String> builtInParams = ruleSetParameterFinder.getBuiltInParams();
+                        builtInParams.keySet().removeIf(OmitEndpointParams::isOmitted);
+                        clientInputParams.putAll(builtInParams);
 
                         ObjectNode ruleSet = endpointRuleSetTrait.getRuleSet().expectObjectNode();
                         ruleSet.getObjectMember("parameters").ifPresent(parameters -> {

smithy-typescript-codegen/src/main/java/software/amazon/smithy/typescript/codegen/endpointsV2/OmitEndpointParams.java

@@ -0,0 +1,33 @@
+/*
+ * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+ package software.amazon.smithy.typescript.codegen.endpointsV2;
+
+ import java.util.Collections;
+ import java.util.HashSet;
+ import java.util.Set;
+
+ /**
+  * Manages a collection of endpoint parameter names to be omitted from a specific interface.
+  * While this could be extensible in the future, as of right now,
+  * this collection is maintaining endpoint params to be omitted from the `ClientInputEndpointParameters` interface.
+  */
+ public final class OmitEndpointParams {
+     private static final Set<String> OMITTED_PARAMS = new HashSet<>();
+
+     private OmitEndpointParams() {}
+
+     public static void addOmittedParams(Set<String> paramNames) {
+         OMITTED_PARAMS.addAll(paramNames);
+     }
+
+     public static boolean isOmitted(String paramName) {
+         return OMITTED_PARAMS.contains(paramName);
+     }
+
+     public static Set<String> getOmittedParams() {
+         return Collections.unmodifiableSet(OMITTED_PARAMS);
+     }
+}