/usr/lib/ibus-sunpinyin/ibus-setup-sunpinyin is in ibus-sunpinyin 2.0.3-3.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 | #!/bin/sh
prefix=/usr
exec_prefix=${prefix}
export IBUS_PREFIX=${prefix}
export IBUS_LOCALEDIR=${prefix}/share/locale
exec python /usr/share//ibus-sunpinyin/setup/main.py $@
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