<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def to_ufo_propagate_font_anchors(self, ufo):
 """Copy anchors from parent glyphs' components to the parent."""


    processed = set()
    for glyph in ufo:
        _propagate_glyph_anchors(self, ufo, glyph, processed)