165         let prefix = &fd.package.clone().unwrap_or_default();  in process_file()  localVariable
168             self.process_message(fd.clone(), prefix, msg)?;  in process_file()
172             self.process_enum(fd.clone(), prefix, en)?;  in process_file()
176             let service_name = extract_name(prefix, "service", service.name.as_ref())?;  in process_file()
194         prefix: &str,  in process_message()
197         let message_name = extract_name(prefix, "message", msg.name.as_ref())?;  in process_message()
223         prefix: &str,  in process_enum()
226         let enum_name = extract_name(prefix, "enum", en.name.as_ref())?;  in process_enum()
240         prefix: &str,  in process_field()
243         let field_name = extract_name(prefix, "field", field.name.as_ref())?;  in process_field()
282     prefix: &str,  in extract_name()
292             if prefix.is_empty() {  in extract_name()
295                 Ok(format!("{}.{}", prefix, name))  in extract_name()