pub unsafe extern "C" fn clang_getDefinitionSpellingAndExtent(
    cursor: CXCursor,
    start: *mut *const c_char,
    end: *mut *const c_char,
    start_line: *mut c_uint,
    start_column: *mut c_uint,
    end_line: *mut c_uint,
    end_column: *mut c_uint
)