| Various methods which take variable-length arguments throw runtime exceptions | |
| like `IllegalArgumentException` when the arguments are not distinct. | |
| This checker warns on using non-distinct parameters in various varargs methods | |
| when the usage is either redundant or will result in a runtime exception. | |
| Bad: | |
| ```java | |
| ImmutableSet.of(first, second, second, third); | |
| ``` | |
| Good: | |
| ```java | |
| ImmutableSet.of(first, second, third); | |
| ``` |