| errors | Package errors implements functions to manipulate errors. |
| fmt | Package fmt implements formatted I/O with functions analogous to C's printf and scanf. |
| 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. |
| net/url | Package url parses URLs and implements query escaping. |
| strings | Package strings implements simple functions to manipulate UTF-8 encoded strings. |