You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: pybuffer.rs
    path of file: ./repos/pyo3/pyo3-ffi/src
    
    the code of the file until where you have to start completion: use crate::object::PyObject;
use crate::pyport::Py_ssize_t;
use std::os::raw::{c_char, c_int, c_void};
use std::ptr;

#[repr(C)]
#[derive(Copy, Clone)]
pub struct Py_buffer {
    pub buf: *mut c_void,
    /// Owned reference
    pub obj: *mut crate::PyObject,
    pub len: Py_ssize_t,
    pub itemsize: Py_ssize_t,
    pub readonly: c_int,
    pub ndim: c_int,
    pub format: *mut c_char,
    pub shape: *mut Py_ssize_t,
    pu
    
    pub const fn new() -> Self {
        Py_buffer {
            buf: ptr::null_mut(),
            obj: ptr::null_mut(),
            len: 0,
            itemsize: 0,
            readonly: 0,
            ndim: 0,
            format: ptr::null_mut(),
            shape: ptr::null_mut(),
            strides: ptr::null_mut(),
            suboffsets: ptr::null_mut(),
            internal: ptr::null_mut(),
            #[cfg(PyPy)]
            flags: 0,
            #[cfg(PyPy)]
            _strides: [0; PyBUF_MAX_NDIM],
            #[cfg(PyPy)]
            _shape: [0; PyBUF_MAX_NDIM],
        }
    }