CREATE TABLE table_17125 ("Team" TEXT, "Outgoing manager" TEXT, "Manner of departure" TEXT, "Date of vacancy" TEXT, "Replaced by" TEXT, "Date of appointment" TEXT)

How many manners of departure did peter voets have?
SELECT COUNT("Manner of departure") FROM table_17125 WHERE "Outgoing manager" = 'Peter Voets'
SELECT COUNT("Manner of departure") FROM "table_17125" WHERE "Outgoing manager" = 'Peter Voets'