def _add_fbc_objective(self, model_tag, obj_id):
objective_list = ET.SubElement(model_tag, _tag(<EOL>'<STR_LIT>', FBC_V2))<EOL>objective_list.set(_tag('<STR_LIT>', FBC_V2), '<STR_LIT>')<EOL>objective_tag = ET.SubElement(<EOL>objective_list, _tag('<STR_LIT>', FBC_V2))<EOL>objective_tag.set(_tag('<STR_LIT:id>', FBC_V2), '<STR_LIT>')<EOL>objective_tag.set(_tag('<STR_LIT:type>', FBC_V2), '<STR_LIT>')<EOL>flux_objective_list = ET.SubElement(objective_tag, _tag(<EOL>'<STR_LIT>', FBC_V2))<EOL>flux_objective_tag = ET.SubElement(flux_objective_list, _tag(<EOL>'<STR_LIT>', FBC_V2))<EOL>flux_objective_tag.set(_tag('<STR_LIT>', FBC_V2), '<STR_LIT>' + obj_id)<EOL>flux_objective_tag.set(_tag('<STR_LIT>', FBC_V2), '<STR_LIT:1>')<EOL>
Adds the objective(s) to the sbml document.