TemplateLiteral.Elementand t('M) = ('M, t');let pp_value: Format.formatter => value => unit;let show_value: value => string;let pp: (Format.formatter => 'M => unit) => Format.formatter => t('M) => unit;let show: (Format.formatter => 'M => unit) => t('M) => string;let pp_t': Format.formatter => t' => unit;let show_t': t' => string;