怎么通过Feature来获得body

牧马人

如我通过BlockFeatureBuildr创建了一个Block特征，怎么通过这个Feature来获得Body呢？
" W* N* C( K  P1 S4 ] Features::Feature *blockFeature;
/ T9 X4 e( u. }9 ^  blockFeature=BlockFeatureBuilder1->CommitFeature();
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mildcat

4 y4 l% e7 E! K
) [& v1 _. l- J) M) R& |$ W3 t, Cint UF_MODL_ask_feat_body
(
# c* q  O( {$ L) P9 @; \
tag_t feature_obj_id,
- k0 \" r' K8 b  G3 {$ K+ ]tag_t * body_obj_id
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+ G1 |9 q  x. O)