如何将c++类作为参数传递给包装c++类的Cython类？

# 声明C++类的接口
cdef extern from "cpp_class.hpp":
    cdef cppclass CppClass:
        CppClass() except +
        void someMethod()

# 包装C++类的Cython类
cdef class CythonClass:
    cdef CppClass* cpp_obj

    def __cinit__(self):
        self.cpp_obj = new CppClass()

    def __dealloc__(self):
        del self.cpp_obj

    def call_cpp_method(self):
        self.cpp_obj.someMethod()

# 使用Cython类
def main():
    cdef CythonClass cython_obj = CythonClass()
    cython_obj.call_cpp_method()

if __name__ == "__main__":
    main()