Make AbstractModule.binder private, for a hair more encapsulation.

PiperOrigin-RevId: 555492476

core/src/com/google/inject/AbstractModule.java

@@ -53,7 +53,7 @@ import org.aopalliance.intercept.MethodInterceptor;
  */
 public abstract class AbstractModule implements Module {
 
-  Binder binder;
+  private Binder binder;
 
   @Override
   public final synchronized void configure(Binder builder) {

core/test/com/google/inject/CircularDependencyTest.java

@@ -438,8 +438,8 @@ public class CircularDependencyTest extends TestCase {
             new AbstractModule() {
               @Override
               protected void configure() {
-                binder.bind(A.class).to(E.class);
-                binder.bind(B.class).to(E.class);
+                bind(A.class).to(E.class);
+                bind(B.class).to(E.class);
               }
             });
     injector.getInstance(A.class);
@@ -452,8 +452,8 @@ public class CircularDependencyTest extends TestCase {
               @Override
               protected void configure() {
                 binder().disableCircularProxies();
-                binder.bind(A.class).to(E.class);
-                binder.bind(B.class).to(E.class);
+                bind(A.class).to(E.class);
+                bind(B.class).to(E.class);
               }
             });
 

core/test/com/google/inject/JitBindingsTest.java

@@ -141,7 +141,7 @@ public class JitBindingsTest extends TestCase {
             new AbstractModule() {
               @Override
               protected void configure() {
-                binder.requireExplicitBindings();
+                binder().requireExplicitBindings();
                 bind(Foo.class).to(ScopedFooImpl.class);
               }
             });