'OpenApiDocument' does not contain a definition for 'GetHashCodeAsync' and no accessible extension method 'GetHashCodeAsync' accepting a first argument of type 'OpenApiDocument' could be found (are you missing a using directive or an assembly reference?)

'OpenApiDocument' does not contain a definition for 'GetHashCodeAsync' and no accessible extension method 'GetHashCodeAsync' accepting a first argument of type 'OpenApiDocument' could be found (are you missing a using directive or an assembly reference?)

'OpenApiYamlWriter' does not contain a definition for 'FlushAsync' and no accessible extension method 'FlushAsync' accepting a first argument of type 'OpenApiYamlWriter' could be found (are you missing a using directive or an assembly reference?)

'OpenApiDocument' does not contain a definition for 'GetHashCodeAsync' and no accessible extension method 'GetHashCodeAsync' accepting a first argument of type 'OpenApiDocument' could be found (are you missing a using directive or an assembly reference?)

'OpenApiDocument' does not contain a definition for 'GetHashCodeAsync' and no accessible extension method 'GetHashCodeAsync' accepting a first argument of type 'OpenApiDocument' could be found (are you missing a using directive or an assembly reference?)

'OpenApiYamlWriter' does not contain a definition for 'FlushAsync' and no accessible extension method 'FlushAsync' accepting a first argument of type 'OpenApiYamlWriter' could be found (are you missing a using directive or an assembly reference?)

Process completed with exit code 1.