| `Tree#toString` shouldn't be used for Trees deriving from the code being | |
| compiled, as it discards whitespace and comments. | |
| * If this code is within an Error Prone check, using | |
| `VisitorState#getSourceForNode` will give you the original source text. Note | |
| that for synthetic trees (e.g.: implicit constructors), that source may be | |
| `null`. | |
| * Prefer `Elements#getConstantExpression` to `TreeMaker.Literal` for escaping | |
| constants in generated code. |