Convert isX() methods to isX getter.

pkg/analyzer_experimental/test/generated/test_support.dart

Index: pkg/analyzer_experimental/test/generated/test_support.dart
diff --git a/pkg/analyzer_experimental/test/generated/test_support.dart b/pkg/analyzer_experimental/test/generated/test_support.dart
index 5d74841d50f41deb2648be947c29e7223332da45..1fe35c48181b3e3a56c7afafe126e6c989462573 100644
--- a/pkg/analyzer_experimental/test/generated/test_support.dart
+++ b/pkg/analyzer_experimental/test/generated/test_support.dart
@@ -696,7 +696,7 @@ class EngineTestCase extends JUnitTestCase {
    */
   PropertyAccessorElement getGetter(InterfaceType type, String getterName) {
     for (PropertyAccessorElement accessor in type.element.accessors) {
-      if (accessor.isGetter() && accessor.name == getterName) {
+      if (accessor.isGetter && accessor.name == getterName) {
         return accessor;
       }
     }