Add Import command doesn't work with nested Java classes.

The "Add Import" (`Ctrl+Shift+M` on Windows) command doesn't seem to work as well as it did years ago. Let's say I have:

```java
Optional.ofNullable("foo");
```

If I put my cursor on `ofNullable` and hit `Ctrl+Shift+M`, Eclipse adds an import and changes that to:

```java
ofNullable("foo");
```

Great that works. But let's say I have this class structure:

```java
public final class CloudFormationSupport {

public static final class Outputs {

public static SequencedMap toMap(final Iterable outputs) {

…
```

I call it that method like this:

```java
final Map outputsByKey = CloudFormationSupport.Outputs.toMap(stack.outputs());
```

If I put my cursor on `Outputs`, I expect Eclipse to add an import and give me this:

```java
final Map outputsByKey = Outputs.toMap(stack.outputs());
```

But it doesn't. Eclipse doesn't do anything.

And this is frustrating because my code is well organized and I have many things organized by subclass. It's tedious to go add all the imports so that the code is concise and reads nicely. That's what `Ctrl+Shift+M` is supposed to do for me.

It seems like it used to work more often; nowadays it hardly seems to work at all (especially inside lambdas!). Maybe my memory is looking through rose-colored glasses. In any case, `Ctrl+Shift+M` only seems to work about half the time now.