Given this code defining a class (shown with line numbers):

1: class newClass { 2: private: 3: int a; 4: public: 5: void setA(int value) { a = value; } 6: int getA() { return a; } 7: newClass(int value) : a(value) {}; 8: }; The code on line 7 is referred to as what?

		A data member
		A constructor
		A destructor
		An initializer