Clarify constraints on Security Scheme Object Scheme Property#1880

Merged

webron merged 2 commits intov3.0.3-devfrom

dm/scheme-extensions

Feb 11, 2020

Commits on Mar 14, 2019

Wording around scheme extensions
darrelmiller
committed

Commits on Mar 28, 2019

Clarified that securitySchemeScheme is only a SHOULD be registered scheme
darrelmiller
committed