如何将多维数组的加法放入同一类中的方法中？

class MultiArray:
    def __init__(self, array):
        self.array = array

    def add(self, other):
        if len(self.array) != len(other.array):
            raise ValueError("Arrays must have the same dimensions")
        
        result = []
        for i in range(len(self.array)):
            if len(self.array[i]) != len(other.array[i]):
                raise ValueError("Arrays must have the same dimensions")
            
            row = []
            for j in range(len(self.array[i])):
                row.append(self.array[i][j] + other.array[i][j])
            result.append(row)
        
        return result

# 示例用法
array1 = [[1, 2], [3, 4]]
array2 = [[5, 6], [7, 8]]
multi_array1 = MultiArray(array1)
multi_array2 = MultiArray(array2)
result = multi_array1.add(multi_array2)
print(result)