# Functions
NewTransformer returns a new Transformer.
TransformerWithFix returns a TransformerOption that will update the file options go_package, java_package to match the package per the guidelines of the style guide.
TransformerWithLogger returns a TransformerOption that uses the given logger.
# Interfaces
Transformer transforms an input file into an output file.
# Type aliases
TransformerOption is an option for a new Transformer.