| flag | Package flag implements command-line flag parsing. |
| github.com/getkin/kin-openapi/openapi2 | Package openapi2 parses and writes OpenAPIv2 specification documents. |
| github.com/getkin/kin-openapi/openapi3 | Package openapi3 parses and writes OpenAPI 3 specification documents. |
| github.com/oasdiff/yaml | Package yaml provides a wrapper around go-yaml designed to enable a better way of handling YAML when marshaling to and from structs. |
| log | Package log implements a simple logging package. |
| os | Package os provides a platform-independent interface to operating system functionality. |
| strings | Package strings implements simple functions to manipulate UTF-8 encoded strings. |