golang-github-go-openapi-strfmt-dev 0.0~git20160812.0.d65c7fd-1 (arm64 binary) in ubuntu bionic

 Strfmt implements formatting and validation of various well-known
 string formats such as IP and email addresses for use in other
 OpenAPI Specification libraries.
 .
 The OpenAPI Specification is a powerful definition format to describe
 RESTful APIs and creates a RESTful interface for easily developing
 and consuming an API.