Hermitian transformation frequencies? (hypothetical function numpy.fft.hfftfreq)

For a normal FFT, Numpy implements the method fftfreq(n,d), which provides the frequencies of the FFT right away. However, for the Hermitian transformation hfft, the companion function hfftfreq is missing. What would be the returned values of the function hfftfreq(n,d), if it existed?

Sources:

numpy.fft.fftfreq: https://numpy.org/doc/stable/reference/generated/numpy.fft.fftfreq.html

Discrete Fourier Transform (numpy.fft): https://numpy.org/doc/stable/reference/routines.fft.html

from Hermitian transformation frequencies? (hypothetical function numpy.fft.hfftfreq)