Method Stdio.NonblockingStream()->set_close_callback()

Method set_close_callback

NonblockingStream set_read_callback(function(:void) f, mixed ... rest)
NonblockingStream set_write_callback(function(:void) f, mixed ... rest)
NonblockingStream set_close_callback(function(:void) f, mixed ... rest)
NonblockingStream set_fs_event_callback(function(:void) f, int event_mask, mixed ... rest)