if fn_line.ret_ty_info.from_hu_conv[1] != "":
java_trait_constr = java_trait_constr + "\t\t\t\t" + fn_line.ret_ty_info.from_hu_conv[1].replace("this", "impl_holder.held") + ";\n"
#if fn_line.ret_ty_info.rust_obj in result_types:
if fn_line.ret_ty_info.from_hu_conv[1] != "":
java_trait_constr = java_trait_constr + "\t\t\t\t" + fn_line.ret_ty_info.from_hu_conv[1].replace("this", "impl_holder.held") + ";\n"
#if fn_line.ret_ty_info.rust_obj in result_types: