input: Write a function to design a data structure in Python that can store integer values. The data structure should have methods to add values and find the minimum value stored in it. The function should return the class definition.
  
  class IntList:
      def __init__(self):
          self.values = []
      
      def add_value(self, value):
          self.values.append(value)
      
      def find_min(self):
          return min(self.values)
output: class IntList:
      def __init__(self):
          self.values = []
      
      def add_value(self, value):
          self.values.append(value)
      
      def find_min(self):
          return min(self.values)