auto completion of bean names for `@DependsOn` annotation is broken

[martinlippert]

Auto completion for @DependsOn doesn't work anymore.

This happens as soon as there is no @Component annotation on the class.

Internally, the DependsOnCompletionProcessor.getBeanNameFromSourceCodePosition method causes a NPE due to not finding the component annotation on the type declaration.

Question here is whether the bean name should be inferred by re-using the same mechanism that the component indexer uses to infer the bean name.