[pycbc.waveform.fd]
birefringence = pytgr.birefringence:gen_waveform
fta = pytgr.fta:gen_waveform
massivegraviton = pytgr.massivegraviton:gen_waveform
ppe = pytgr.ppe:gen_waveform

[pycbc.waveform.length]
birefringence = pytgr:length_in_time
fta = pytgr:length_in_time
massivegraviton = pytgr:length_in_time
ppe = pytgr:length_in_time