pub unsafe extern "C" fn apply_synth_method(
u: *mut cst_utterance,
meth: *const cst_synth_module,
) -> *mut cst_utterancepub unsafe extern "C" fn apply_synth_method(
u: *mut cst_utterance,
meth: *const cst_synth_module,
) -> *mut cst_utterance