The method assumeFalse(String, boolean) is undefined for the type Assume

When trying to compile ant project I got the next error message:

The method assumeFalse(String, boolean) is undefined for the type Assume

Well, this is because I was using junit 4.8.2 and that method's signature is available in 4.11
(maybe an earlier version).

Anyway, the good practice is to download the libraries with fetch.xml.