The mBuild function [`pattern.apply()`](https://github.com/mosdef-hub/mbuild/blob/d6ad4db014077a3900f95e1c4fdf91c6caa43c68/mbuild/pattern.py#L68) is not currently being tested in the unit tests. We should add a test function for this. See #625
The mBuild function
pattern.apply()is not currently being tested in the unit tests. We should add a test function for this.See #625