Cornelis van Haarlem superfans — we know you’re out there — rejoice: Thanks to a recent acquisition, Worcester Art Museum now has the nation’s most comprehensive collection of the Dutch painter’s work. Gifted by New York art collector Hester Diamond, “Paris and Oenone” (right) is the third van Haarlem work at WAM. “ ‘Paris and Oenone’ represents a crucial chapter in the history of Dutch painting, and the trajectory of this pioneering artist’s own career,” WAM director Matthias Waschek said in a statement. For the unacquainted, van Haarlem contributed to what art historians call the Dutch Golden Age of art, a period in the 17th century that also encompassed painters Johannes Vermeer and Rembrandt.