I am trying to create PowerApps custom Connector using Apigee API with OAuth 2 - client credential grant type. I am aware that client credentials is not supported by PowerApps today, however would like to know if there is a work around to make this call work, like editing swagger file or so. The API I am working required to pass couple of header information and body to acquire the token. Once the token is received we could set rest of the actions and make it working, but I am stuck here as I could not find a way to input these header information. If anyone knows a solutions to this issue, please advice.