can you post a link to the document that says that?

when i tried to compile this code, i got a compiler error

```
    [javac] c:\dev\git\closure-compiler\src\com\google\javascript\jscomp\Command
LineRunner.java:778: error: method newBufferedReader in class Files cannot be ap
plied to given types;
    [javac]     BufferedReader buffer = java.nio.file.Files.newBufferedReader(fl
agFile);
    [javac]                                                ^
    [javac]   required: Path,Charset
    [javac]   found: Path
    [javac]   reason: actual and formal argument lists differ in length
```