Static factory method to create GraphQLWebClient fixes #2

Author: oliemansm

graphql-webclient/src/main/java/graphql/kickstart/spring/webclient/boot/GraphQLWebClient.java

@@ -1,11 +1,17 @@
 package graphql.kickstart.spring.webclient.boot;
 
+import com.fasterxml.jackson.databind.ObjectMapper;
 import java.util.Map;
+import org.springframework.web.reactive.function.client.WebClient;
 import reactor.core.publisher.Flux;
 import reactor.core.publisher.Mono;
 
 public interface GraphQLWebClient {
 
+  static GraphQLWebClient newInstance(WebClient webClient, ObjectMapper objectMapper) {
+    return new GraphQLWebClientImpl(webClient, objectMapper);
+  }
+
   <T> Mono<T> post(String resource, Class<T> returnType);
 
   <T> Mono<T> post(String resource, Map<String, Object> variables, Class<T> returnType);

graphql-webclient/src/test/java/graphql/kickstart/spring/webclient/boot/GraphQLWebClientTest.java

@@ -37,7 +37,7 @@ void beforeEach() {
     WebClient webClient = WebClient.builder()
         .baseUrl("http://localhost:" + randomServerPort + "/graphql")
         .build();
-    graphqlClient = new GraphQLWebClientImpl(webClient, objectMapper);
+    graphqlClient = GraphQLWebClient.newInstance(webClient, objectMapper);
   }
 
   @Test