method_parameter_type_t *param1 = type1->parameter_types;
method_parameter_type_t *param2 = type2->parameter_types;
while(param1 != NULL && param2 != NULL) {
method_parameter_type_t *param1 = type1->parameter_types;
method_parameter_type_t *param2 = type2->parameter_types;
while(param1 != NULL && param2 != NULL) {