Github user vrozov commented on the issue:
https://github.com/apache/drill/pull/1235
My take is that "append" is more common for classes with the similar
functionality, see for example `ToStringBuilder`. As there is no added benefit
of using "print" vs "append", my recommendation is to keep "append" as is and
see if `DebugStringBuilder` can be replaced with the `ToStringBuilder`.---
