__iter__( (object)arg1) -> object :
C++ signature :
boost::python::objects::iterator_range<boost::python::return_value_policy<boost::python::return_by_value, boost::python::default_call_policies>, boost::transform_iterator<extract_style, std::_Rb_tree_const_iterator<std::pair<std::string const, mapnik::feature_type_style> >, boost::use_default, boost::use_default> > __iter__(boost::python::back_reference<std::pair<boost::transform_iterator<extract_style, std::_Rb_tree_const_iterator<std::pair<std::string const, mapnik::feature_type_style> >, boost::use_default, boost::use_default>, boost::transform_iterator<extract_style, std::_Rb_tree_const_iterator<std::pair<std::string const, mapnik::feature_type_style> >, boost::use_default, boost::use_default> >&>)
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