public class MyResourceServiceProvider extends DefaultResourceServiceProvider {

	@Override
	public boolean canHandle(URI uri) {
		if (true)
			return false;
		else
			return super.canHandle(uri);
	}
	
}

public class MyDslRuntimeModule extends org.xtext.example.mydsl.AbstractMyDslRuntimeModule {

	public Class<? extends IResourceServiceProvider> bindIResourceServiceProviderr() {
		return MyResourceServiceProvider.class;
	}
	
}