pub unsafe extern "C" fn switch_core_file_write(
fh: *mut switch_file_handle_t,
data: *mut c_void,
len: *mut switch_size_t,
) -> switch_status_tpub unsafe extern "C" fn switch_core_file_write(
fh: *mut switch_file_handle_t,
data: *mut c_void,
len: *mut switch_size_t,
) -> switch_status_t