Case.InvalidSyntax
type t('M) = {
invalid_prefix_case: option('M),
invalid_infix_colon: option('M),
invalid_suffix_semicolon: option('M),
};
let pp: (Format.formatter => 'M => unit) => Format.formatter => t('M) => unit;
let show: (Format.formatter => 'M => unit) => t('M) => string;