Better method disabling for DataExtension API

Plan/common/build.gradle

@@ -1,6 +1,7 @@
 dependencies {
     compile "com.djrapitops:AbstractPluginFramework-api:$abstractPluginFrameworkVersion"
     compile project(":api")
+    compileOnly project(":extensions")
     compile project(path: ":extensions", configuration: 'shadow')
     compile "org.apache.httpcomponents:httpclient:$httpClientVersion"
     compile "org.apache.commons:commons-text:$commonsTextVersion"

Plan/common/src/main/java/com/djrapitops/plan/exceptions/DataExtensionMethodCallException.java

@@ -29,9 +29,9 @@ public class DataExtensionMethodCallException extends IllegalStateException {
 
     private final String pluginName;
     // Non serializable field due to Method not being serializable.
-    private final transient MethodWrapper method;
+    private final transient MethodWrapper<?> method;
 
-    public DataExtensionMethodCallException(Throwable cause, String pluginName, MethodWrapper method) {
+    public DataExtensionMethodCallException(Throwable cause, String pluginName, MethodWrapper<?> method) {
         super(cause);
         this.pluginName = pluginName;
         this.method = method;
@@ -41,7 +41,7 @@ public class DataExtensionMethodCallException extends IllegalStateException {
         return pluginName;
     }
 
-    public Optional<MethodWrapper> getMethod() {
+    public Optional<MethodWrapper<?>> getMethod() {
         // method is transient and might be lost if flushed to disk.
         return Optional.ofNullable(method);
     }

Plan/common/src/main/java/com/djrapitops/plan/extension/implementation/providers/MethodWrapper.java

@@ -34,6 +34,7 @@ public class MethodWrapper<T> {
     private final Method method;
     private final Class<T> returnType;
     private final MethodType methodType;
+    private boolean disabled = false;
 
     public MethodWrapper(Method method, Class<T> returnType) {
         this.method = method;
@@ -42,6 +43,7 @@ public class MethodWrapper<T> {
     }
 
     public T callMethod(DataExtension extension, Parameters with) {
+        if (disabled) return null;
         try {
             return returnType.cast(with.usingOn(extension, method));
         } catch (InvocationTargetException notReadyToBeCalled) {
@@ -67,6 +69,10 @@ public class MethodWrapper<T> {
         return returnType;
     }
 
+    public void disable() {
+        this.disabled = true;
+    }
+
     @Override
     public boolean equals(Object o) {
         if (this == o) return true;

Plan/common/src/main/java/com/djrapitops/plan/extension/implementation/providers/gathering/ProviderValueGatherer.java

@@ -105,6 +105,7 @@ public class ProviderValueGatherer {
     }
 
     public void disableMethodFromUse(MethodWrapper<?> method) {
+        method.disable();
         dataProviders.removeProviderWithMethod(method);
     }