How to "require" OpenJDK 10?

Thank you for this amazing formula.  So much easier than installing OpenJDK manually.

I have one issue.  How do I make other packages require this formula to be installed.  I tried the following but I get: `The following requisites were not found`:
```
- require:
  - pkg: java
```
I also tried inserting the following:
```
include:
  - java
```

Thank you for your help...