fix(java): Send only request body reference for body-only wrapped request

generators/java/sdk/src/main/java/com/fern/java/client/generators/endpoint/OnlyRequestEndpointWriter.java

@@ -266,14 +266,33 @@ public Void visitTypeReference(HttpRequestBodyReference _typeReference) {
                         .addStatement("$L = $T.create(\"\", null)", getOkhttpRequestBodyName(), RequestBody.class)
                         .beginControlFlow("if ($N.isPresent())", "request");
             }
+
+            CodeBlock requestBodyGetter = CodeBlock.of("request");
+
+            boolean requestBodyGetterPresent =
+                    clientGeneratorContext.getCustomConfig().inlinePathParameters()
+                            && generatedWrappedRequest != null
+                            && generatedWrappedRequest.requestBodyGetter().isPresent();
+
+            if (requestBodyGetterPresent
+                    && (generatedWrappedRequest.requestBodyGetter().get()
+                            instanceof GeneratedWrappedRequest.ReferencedRequestBodyGetter)) {
+                String getterName = ((GeneratedWrappedRequest.ReferencedRequestBodyGetter)
+                                generatedWrappedRequest.requestBodyGetter().get())
+                        .requestBodyGetter()
+                        .name;
+
+                requestBodyGetter = CodeBlock.of("request.$L()", getterName);
+            }
+
             codeBlock
                     .addStatement(
                             "$L = $T.create($T.$L.writeValueAsBytes($L), $T.$L)",
                             getOkhttpRequestBodyName(),
                             RequestBody.class,
                             generatedObjectMapper.getClassName(),
                             generatedObjectMapper.jsonMapperStaticField().name,
-                            "request",
+                            requestBodyGetter,
                             clientGeneratorContext.getPoetClassNameFactory().getMediaTypesClassName(),
                             CoreMediaTypesGenerator.APPLICATION_JSON_FIELD_CONSTANT)
                     .endControlFlow();