def __call__(self, *args):
from abjad.tools import spannertools
if len(args) == 1:
spanner_classes = (
spannertools.DynamicTextSpanner,
spannertools.HairpinSpanner,
)
parentage = args[0]._get_parentage()
dynamic_spanners = parentage._get_spanners(spanner_classes)
for dynamic_spanner in dynamic_spanners:
if not dynamic_spanner._is_exterior_leaf(args[0]):
message = 'can not attach dynamic mark'
message += ' to interior component of dynamic spanner.'
raise WellFormednessError(message)
return ContextMark.__call__(self, *args)
