File	Line Coverage			Functions
http_formatter_context.h	90.9%	90.9%	40 / 44	95.2%	20 / 21
substitution_formatter.h	100%	100%	0 / 0	100%	0 / 0
substitution_formatter_base.h	100%	100%	19 / 19	100%	6 / 6