typedef void (*pgstat_page) (pgstattuple_type *, Relation, BlockNumber,
										 BufferAccessStrategy);

typedef char (*get_relation_stats_hook_type) (int *root,
														  unsigned *rte,
														  char attnum,
												  float *vardata);

void similarity_dist(int m)
{
	char		chars[BIGGEST(BIGGEST(TZ_MAX_CHARS + 1, 3 /* sizeof gmt */ ),
									  *here)];

	float4		res = DatumGetFloat4(FunctionCall2(similarity,
												   (here),
												   here));

	if (es->verbose)
	{
		char	   *sql = strVal(list_nth(fdw_private,
										  here));
	}

	rb->allocfunc(1);
	rb2.allocfunc(7);
}