New in version 2.0.
Get time signature mark attached to component:
abjad> measure = Measure((4, 8), "c'8 d'8 e'8 f'8")
abjad> f(measure)
{
\time 4/8
c'8
d'8
e'8
f'8
}
abjad> contexttools.get_time_signature_mark_attached_to_component(measure)
TimeSignatureMark((4, 8))(|4/8, c'8, d'8, e'8, f'8|)
Return time signature mark.
Raise missing mark error when no time signature mark attaches to component.