avoid using helpers on Member hierarchy

weaver/src/org/aspectj/weaver/bcel/BcelTypeMunger.java

@@ -354,14 +354,14 @@ public class BcelTypeMunger extends ConcreteTypeMunger {
 	private boolean enforceDecpRule3_visibilityChanges(BcelClassWeaver weaver, ResolvedType newParent, ResolvedMember superMethod,
 			LazyMethodGen subMethod) {
 		boolean cont = true;
-		if (superMethod.isPublic()) {
+		if (Modifier.isPublic(superMethod.getModifiers())) {
 			if (subMethod.isProtected() || subMethod.isDefault() || subMethod.isPrivate()) {
 				weaver.getWorld().getMessageHandler().handleMessage(
 						MessageUtil.error("Cannot reduce the visibility of the inherited method '" + superMethod + "' from "
 								+ newParent.getName(), superMethod.getSourceLocation()));
 				cont = false;
 			}
-		} else if (superMethod.isProtected()) {
+		} else if (Modifier.isProtected(superMethod.getModifiers())) {
 			if (subMethod.isDefault() || subMethod.isPrivate()) {
 				weaver.getWorld().getMessageHandler().handleMessage(
 						MessageUtil.error("Cannot reduce the visibility of the inherited method '" + superMethod + "' from "

weaver/src/org/aspectj/weaver/bcel/BcelWorld.java

@@ -552,7 +552,7 @@ public class BcelWorld extends World implements Repository {
 			// look for the method there
 			for (Iterator<ResolvedMember> iterator = appearsDeclaredBy.getMethods(true, true); iterator.hasNext();) {
 				ResolvedMember method = iterator.next();
-				if (method.isStatic()) {
+				if (Modifier.isStatic(method.getModifiers())) {
 					if (name.equals(method.getName()) && signature.equals(method.getSignature())) {
 						// we found it
 						declaringType = method.getDeclaringType();

weaver/src/org/aspectj/weaver/bcel/LazyClassGen.java

@@ -320,7 +320,7 @@ public final class LazyClassGen {
 		ResolvedMember[] fields = type.getDeclaredFields();
 		for (int i = 0; i < fields.length; i++) {
 			ResolvedMember field = fields[i];
-			if (field.getName().equals("serialVersionUID") && field.isStatic() && field.getType().equals(ResolvedType.LONG)) {
+			if (field.getName().equals("serialVersionUID") && Modifier.isStatic(field.getModifiers()) && field.getType().equals(ResolvedType.LONG)) {
 				return true;
 			}
 		}

weaver/src/org/aspectj/weaver/bcel/Utility.java

@@ -178,7 +178,7 @@ public class Utility {
 
 	public static Instruction createSet(InstructionFactory fact, Member signature) {
 		short kind;
-		if (signature.isStatic()) {
+		if (Modifier.isStatic(signature.getModifiers())) {
 			kind = Constants.PUTSTATIC;
 		} else {
 			kind = Constants.PUTFIELD;