Print Qualifiers found in the annotations.
           QUALIFIERS:
                1,462 colocalizes_with
                1,454 contributes_to
                1,157 not
                   13 not colocalizes_with   (TBD: CHK - Seen in gene2go, but not gafs)
                    4 not contributes_to     (TBD: CHK - Seen in gene2go, but not gafs)

def _prt_qualifiers(associations, prt=sys.stdout):
        """Print Qualifiers found in the annotations.
           QUALIFIERS:
                1,462 colocalizes_with
                1,454 contributes_to
                1,157 not
                   13 not colocalizes_with   (TBD: CHK - Seen in gene2go, but not gafs)
                    4 not contributes_to     (TBD: CHK - Seen in gene2go, but not gafs)
        """
        prt.write('QUALIFIERS:\n')
        for fld, cnt in cx.Counter(q for nt in associations for q in nt.Qualifier).most_common():
            prt.write('    {N:6,} {FLD}\n'.format(N=cnt, FLD=fld))