libraries/botbuilder/src/botFrameworkHttpClient.ts
libraries/botframework-connector/src/auth/botFrameworkClientImpl.ts

libraries/botbuilder/src/botFrameworkAdapter.ts
libraries/botframework-connector/src/auth/connectorFactoryImpl.ts

libraries/botbuilder/src/botFrameworkHttpClient.ts
libraries/botframework-connector/src/skills/botFrameworkClient.ts